Mater Pact

Magnum DS ANSI/UL Low Voltage Power Circuit BreakersProduct Focus

PG01301001E For more information visit: www.cutler-hammer.eaton.com

July 2003

For more information visit: www.cutler-hammer.eaton.comPG01301001E

1Contents

IntroductionOverview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2One Family . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Smaller Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Higher Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Drawout Cassettes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Enclosure Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Functions and CharacteristicsOverview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Characteristics Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Design and Testing Standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Nameplate Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Installation and Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Circuit Breaker Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Trip Units and Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Fixed Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Drawout Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Phasing on Double-wide Breakers. . . . . . . . . . . . . . . . . . . . . . . . . . 40Accessory Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Breaker Lock OFF Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Application and Installation InformationAmbient Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Bus Bar Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Altitude Rating Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Watts Loss Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Electrical Clearances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Maintenance Guidelines

Breaker Specifications

Ordering InformationFactory Configured Breakers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56Factory Configured Cassettes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64Field Option Kits for Cassettes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66Field Option Kits for Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . 67Miscellaneous Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Engineering Data Reference Chart . . . . . . . . . . . . . . . . . . . . . . . . . . 72Trip Unit Curves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86Dimensional Drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

PG01301001EFor more information visit: www.cutler-hammer.eaton.com

July 2003

Cutler-Hammer Type DS LowVoltage Power Circuit Breakershave set the industry standard forover three decades. When reliabil-ity and customer service areparamount, Cutler-Hammer is themarket leader for ANSI/UL applica-tions

There is a new generation of Cutler-Hammer Power Circuit Breakersthat are smaller with higher per-formance and more versatility.

Magnum DS

Magnum DS Low Voltage PowerCircuit Breakers are designed forultimate application flexibility,with the needs of both the powerdistribution equipment user andthe low voltage electrical equip-ment manufacturer in mind.

For maximum safety, a modern,through-the-door design permitsaccess to the breaker levering sys-tem, trip unit, controls, and indica-tors with the door closed.

High withstand and interruptingratings provide for maximum selec-tivity and system coordination tomeet the needs of the high avail-able fault currents on today’s elec-trical power distribution systems.

Field installable accessoriesminimize inventory and permit UL-approved field installation of cur-rent sensors, rating plugs, trip unitsand accessories.

A compact and modular familyof breaker frame sizes makes thedesign of compact, economicaland versatile enclosures a reality.

2 Overview

Magnum DS The New Standard in Low Voltage Power Circuit Breakers


July 2003

Magnum DS circuit breakers areavailable in a family of threephysical frame sizes.

The MDN narrow frame is thehighest performing power circuitbreaker of its size and rating class.Continuous current ratings areavailable from 800 to 1600amperes (drawout) and 800 to 2000amperes (fixed mounted).Withstand and interrupting ratingsare available from 42 to 65 kA at600Vac. The MDN compact sizeallows for application in compactenclosures of many types.

The MDS standard frame is ideal-ly suited for the construction of ver-tically stacked modular ANSI/ULSwitchgear and Switchboards.Continuous current ratings areavailable from 800 to 3200 amperesin the same frame with uniform 5inch pole center spacing.Withstand ratings are available to85 kA and interrupting ratings to100 kA at 600 Vac for improved sys-tem coordination and service conti-nuity.

The MDS double-wide frame isideal for application as main andtie breakers in high capacity powerdistribution systems. Continuouscurrent ratings are available in 4000and 5000 amperes. A 6000 rating isavailable when the breaker isapplied in a suitably designed andtested fan cooled enclosure.Withstand and interrupting ratingsare available to 100 kA at 600Vacfor maximum system coordinationwith down stream devices.

3One Family

Three Frame Sizes in One Family


July 2003

The Magnum DS circuit breaker issignificantly smaller than previ-ous generation open type metalframe power circuit breakers. Highstrength, thermoset compositeresin materials used in the breakerframe provide increased strengthfor higher capacity ratings. Thisleads to the design of smaller andmore economic enclosuresusing far less critical floorspace.

The modern, through-the-doordesign construction results inenclosures of shallower depth,while providing three position dra-wout levering and storage with theenclosure door closed.

The modular design of theMagnum DS standard and double-wide frames is the key to designsimplification and more compactSwitchgear. Two columns of sin-gle-wide circuit breakers can bestacked over or under double-widebreakers with a common riser bus.

4 Smaller Size

More Circuit Breakersper

Square Foot of Space


July 2003

Magnum DS circuit breakers havehigher levels of performancethan conventional metal framepower circuit breakers.

Higher interrupting capacityallows Magnum DS to be appliedon power distribution systems withhigher available fault currents.

Higher short time (withstand)current ratings along with selective(LS) Digitrip RMS trip units resultsin improved selectivity betweenmain, feeder, and branch circuitbreakers.

5Higher Performance

Higher Levels of Performance

Interruptingup to65 kA

Interruptingup to

100 kA

Interruptingup to

100 kA

Short Timeup to65 kA

Short Timeup to85 kA

Short Timeup to

100 kA

I.C. at 635 (v)

42 kA 50 kA 65 kA

42 kA 50 kA 65 kA 85 kA 100 kA

85 kA 100 kA

Performance Family

Magnum MDNNarrow Frame800 - 2000 A.

Magnum MDSStandard Frame

800 - 3200 A.

Magnum MDSDouble-wide Frame

4000 - 6000 A.

Continuous Current (A)

800 1200 1600 2000 2500 3000 3200 4000 5000 6000

MDNNarrow

MDSStandard

MDSDouble-wide


July 2003

The MDN narrow frame circuitbreaker is available in a compactcassette with horizontal primarystabs and terminals, making it idealfor single high compact enclosures.Optional vertical adapter kits areavailable for applications wherebus bar termination in the verticalplane or multiple stacking of break-ers is preferred.

MDS standard and double-wideframe circuit breakers are avail-able in two types of cassettes; theuniversal and basic cassette. Bothhave vertical primary terminalstabs for interface with the breaker.A uniform 5 inch pole center spac-ing makes these cassettes ideal forapplications that require stacking ofmultiple circuit breakers in a singleenclosure structure.

The Universal Cassette is avail-able in 3-pole and 4-pole configura-tions and is supplied with large flatprimary pre-drilled terminal pads.This offers maximum flexibility forthe enclosure manufacturer byallowing for bus bar termination inthe horizontal or vertical planes orfrom the top or bottom direction.

The Basic Cassette is designed toaccommodate 3-pole applicationswhere the enclosure manufacturerprefers primary terminations withbus bars in the vertical plane.Optional vertical bus bar stab kitsare available for purchase or theenclosure manufacturer can chooseto self-fabricate these stabs as partof their manufacturing system.

6 Drawout Cassettes

Three Drawout Cassette Options

MDN Narrow Frame Cassette

MDS Universal Cassette

MDS Basic Cassette (with Optional Line and Load Stabs)

Front View (with circuit breaker) Rear View

Rear ViewFront View(with Optional Shutters)


July 2003

Cutler-Hammer offers a hierarchyof enclosure solutions frombreaker and cassette componentsto complete UL Listed SwitchgearAssemblies and Switchboards.Power distribution equipment man-ufacturers can apply these solu-tions to add value based on theirindividual capabilities to customizeproduct for their customers.

Pow-R-Line C UL891 LowVoltage Switchboards useMagnum DS breakers for commer-cial and light industrial applica-tions.

Magnum DS UL1558 ListedLow Voltage Switchgear setsthe industry standard for completeand customized switchgear applica-tions.

Magnum DS Bare BonesSwitchgear provides an assemblysolution that is as complete asspecified by the OEM, but still hasprovisions for added value. “BareBones” Switchgear is generallyprovided without enclosure wiringand includes sufficient blank panelspace and room for OEM addedcomponents. The OEM typicallyadds the relaying, metering andother customized components andcompletes the wiring and tests thecomplete assembly to customize itto their customer requirements.

Magnum DS Power Modulesprovide a “shell” frame assembly,which allows for substantial modifi-cation and value added by theenclosure manufacturer. Powermodules consist of base metalstructures, compartment cells andvertical bus. Typically the OEM willself-fabricate the horizontal bus, theexterior panels, and the compart-ment doors. The OEM then assem-bles the individual structures, addsthe relaying, metering, and othercustomized components. Finallythe assembly is wired and tested tocustomer requirements.

7Enclosure Solutions

Enclosure Solutions

Magnum DS Switchgear Assembly (UL1558 Listed)

Magnum DS Power Module (UL Recognized)


July 2003

Introduction

The Magnum DS Low Voltage PowerCircuit Breaker affords customersthe opportunity to meet the increas-ingly complex requirements ofmodern distribution systems. It isdesigned and tested for use in lowvoltage power distribution assem-blies applied at nominal voltages of240, 480, and 600 volts ac.Magnum DS is available in drawoutand fixed circuit breaker mountingconfigurations. High interruptingratings up to 100kA without fusesand continuous current ratingsfrom 800 through 6000 amperesare covered by three differentframe sizes.

Magnum DS circuit breakers are ULlisted, and are built and tested in anISO 9000 certified facility. The circuitbreakers meet or exceed all applica-ble ANSI, NEMA, UL and CSA stan-dards including:

ANSI C37.13, C37.16, C37.17 andC37.50

NEMA SG3 and UL 1066 Suitable in UL 1558 LV

Switchgear Suitable in UL 891 Switchboards Suitable in UL CSA 22.2.31 LV

Assemblies

Controls and indicators are func-tionally grouped on the circuitbreaker’s front cover. The through-the-door drawout design permitseasy and safe access to the frontcover controls, as well as the tripunit and racking device.

Intelligence Systems Digitrip microprocessor-based

true rms sensing trip units Protection and coordination Energy monitoring and power

quality Communications Protective relay features Integral testing Hand held test kit

Special Application CircuitBreakers Non-automatic circuit breakers -

a non-automatic circuit breakerdoes not include a trip unit, sen-sors or overcurrent release.

Contact Cutler-Hammer for otherspecial applications.

Functional Techniques Patented “Heal -Toe” contac-

structure Improved contact material “C” Loop current path Braided current path connections Sealed, removable arc chambers

Reliability, Maintenance and Safety Front accessible and dedicated

secondary wiring Finger proof secondary contacts Drawout rail construction Front mounted, plug-in acces-

sories Accessory viewing windows Proven operating mechanism Fewer individual parts Mechanical main contact wear

indicator One piece removable arc chutes

and covers Insulating and isolating arc

chambers Replaceable current path struc-

tures, current sensors and tripunits

Magnum DS circuit breakers utilizeone of a family of microprocessor-based Digitrip RMS electronic, rmssensing and programmable tripunits to provide system selectivity,advanced coordination and com-munications.

Functional and Flexible Rigid frame of high strength

engineered thermoset compositeresins

Compact and lightweight Rugged, maintainable

construction Three frame sizes Four position drawout or fixed

mounting configurations Through-the-door drawout

construction Common height, depth and door

cutout Spring stored energy mechanism Electrical or manual operation

(field convertible) Field installable UL Approved

accessories

Performance Plus Designed and tested to ANSI,

NEMA, UL and CSA Standards Nine continuous current frame

sizes (800 through 5000A withoutfans)

6000 amp rating in fan cooledenclosure

High interrupting ratings High withstand ratings Rated for 100% continuous

operation in enclosure 3 cycle closing

8 Overview


July 20039 Characteristics Table

MDNNarrowFrame

MDSStandard

Frame

Standard Frame (MDS) 800

16002000250030003200

100➃

85

➅

➅

––––

Magnum DS FrameCircuit Breaker Characteristics ①

Continuous Current Rating (Amps at 40°C)

②Short Circuit Current (kA rms sym)Short Time Withstand Current (kA rms sym) Maximum Break Time (msec)Maximum Closing Time (msec)Circuit Breaker Dimensions (in)➂

HeightDepth Width (3-pole)Width (4-pole)HeightDepth Width (3-pole)Width (4-pole)

Circuit Breaker Weight (lb)➂

3-pole4-pole3-pole4-pole3-pole4-pole

Non-Auto Switch Characteristics

Short Circuit Current (kA rms sym)②

Short Time Withstand Current (kA rms sym) Continuous Current Range (Amps)Close and Latch Current (kA rms peak)⑤

Continuous Current Range (Amps)Close and Latch Current (kA rms peak)⑤

Narrow Frame (MDN)

① Circuit breakers equipped with integral trip units have a making current release set to trip instantaneously when the peak instantaneous cur-rent exceeds 25 x In (In is established by the breaker’s current sensors and rating plug).② The short circuit current rating is applicable at 635Vac, 508Vac and 254Vac.③ The approximate weights and depth dimension shown do not include optional adapters on the primary terminals.④ Standard frame circuit breakers rated 100kA are equipped with a high instantaneous trip set to the withstand level. ⑤ Close and latch ratings are applicable only to non-automatic switches. Non-automatic switches should be applied with a suitable externalovercurrent device with instantaneous trip to protect above the published close and latch rating.➅ The maximum available instantaneous interrupting rating for the standard frame non-automatic switch is 85kA.➆ The 2000A Narrow frame is available as fixed mount only.⑧ Magnum DS 6000A circuit breaker applied in a suitably designed and tested fan cooled enclosure.

80012001600

–

4242

42

42to 1600

43––

80012001600

5050 3050

16.814.612.516.221

18.713.317

951201071366170

50

50to 2000

55––

800120016002000➆

6565

65

65to 2000

69––

Fixed

Drawout

Fixed

Drawout

Cassette

8001600

––––

5050

50

50to 1600

55––

80016002000250030003200

6565

65

65to 2000

55

3200110

80016002000250030003200

8585

85

69to 2000

110

3200

3050

16.814.616.221.221.018.717.7423.0

128 to 150160 to 190155 to 189194 to 246117 to 123123 to 150

Magnum DS Characteristics, Dimensions and Weights (continued on next page)

800–––––

4242

42

42to 800

27––

(Universal Type)


July 200310Characteristics Table

(continued from previous page)

MDSDouble-wide

Frame

Magnum DS FrameCircuit Breaker Characteristics ①

Continuous Current Rating Amps at 40°C

②Short Circuit Current (kA rms sym)Short Time Withstand Current (kA rms sym)Maximum Break Time (msec)Maximum Closing Time (msec)Circuit Breaker Dimensions (in)➂

HeightDepth Width (3-pole)Width (4-pole)HeightDepth Width (3-pole)Width (4-pole)

Circuit Breaker Weight (lb)➂3-pole4-pole3-pole4-pole3-pole4-pole

Non-Auto Switch Characteristics

Short Circuit Current (kA rms sym)②

Short Time Withstand Current (kA rms sym)



Double-wide Frame MDS

40005000

–

8585

100

100to 4000

138

5000 & 6000138

400050006000 ⑧

100100

100

100

to 4000207

5000 & 6000207

Fixed

Drawout

Fixed

Drawout

Cassette

4070

16.814.634.944.121.018.736.045.8

237 to 276319 to 360303 to 343366 to 441199 to 212250 to 266

(Universal Type)


July 2003

Introduction

The Magnum DS power circuitbreaker was designed and tested tomeet the requirements of the ANSImarket. It is a 100% rated device,designed to carry 100% of itsnameplate current rating in anenclosure without derating.

Magnum DS circuit breakers are ULListed, and tested to all applicableNEMA, ANSI, IEEE and UL standards.Specifically, the circuit breakerscomply with the following:

ANSI C37.13 (Low Voltage ACPower Circuit Breakers Used InEnclosures)

ANSI C37.16 (Preferred Ratings,Related Requirements AndApplication RecommendationsFor Low Voltage Power CircuitBreakers And AC Power CircuitProtectors)

ANSI C37.17 (Trip Devices For ACAnd General Purpose DC LowVoltage Power Circuit Breakers)

ANSI C37.50 (Test ProceduresFor Low Voltage AC PowerCircuit Breakers Used InEnclosures)

ANSI C37.50 testing is demandingand consists of four test sequences.All tests are performed using adrawout circuit breaker in its mini-mum size enclosure for each framesize. The first three tests are similarin a number of ways to tests per-formed on other types of low volt-age circuit breakers, such as moldedcase circuit breakers. It is thefourth test sequence that differenti-ates the power circuit breaker fromother circuit breakers.

Test Sequence 1This test sequence consists of atemperature rise test, an overloadcalibration, and then a short circuittest.

Test Sequence 2 This test sequence consists of aseries of short circuit tests.

Test Sequence 3This test sequence is a test ofendurance.

Test Sequence 4 This test sequence is a momentaryrating test. Other types of low volt-age circuit breakers are not subject-ed to this type of test and, therefore,have no full 30 cycle short time rat-ing.

UL 1066 (Standard For LowVoltage AC And DC Power CircuitBreakers Used In Enclosures)

NEMA SG3 (This StandardAdopts ANSI C37.16 In ItsEntirety)

In addition, Magnum DS is suitablefor use in:

UL 1558 LV Switchgear UL 891 LV Switchboards UL CSA 22.2.31 LV Assemblies

Magnum DS circuit breakers can beused in forward or reverse feedapplications.

The standards outlined establishthe minimum requirements. Thereis nothing prohibiting a circuitbreaker design from exceedingstandards by offering additionalfeatures and/or higher levels of per-formance. Magnum DS does thisin a number of areas.

ANSI 37.50 TestingLow voltage power circuit breakerscan be applied at or below theirnameplate rating. That nameplaterating is a result of having success-fully completed a series of rigroustests. This is the 100% rating.

11Design and Testing Standards


July 2003

Nameplate Identification

Magnum DS low voltage power cir-cuit breakers must be applied with-in their nameplate ratings.Nameplates are prominently dis-played on the front of the circuitbreaker, and provide importantinformation relative to that specificcircuit breaker.

A Magnum DS circuit breaker iseasily identified by its specific des-ignation.

12 Nameplate Identification

A

B

Low voltage power circuit breaker family name

Breaker family designation number

C Breaker frame size in amperes

D Interrupting capacity rating

E Factory Equipped Accessories

M D S C 3 2Circuit Breaker

TypeMDS - Standard andDouble Wide Frames

MDN - Narrow Frame

Interrupting Capacity

4 - 42,0005 - 50,0006 - 65,0008 - 85,000C - 100,000L - 200,000 ①X - 200,000 ➁

FrameSize

08 - 800 Amps12 - 1200 Amps16 - 1600 Amps20 - 2000 Amps25 - 2500 Amps30 - 3000 Amps32 - 3200 Amps40 - 4000 Amps ➂50 - 5000 Amps ➃60 - 6000 Amps

AB

C

D

E

Magnum DS Designation Example

Typical Magnum DS Nameplate

① Reserved for future breaker with integral current limiters➁ Reserved for future breaker with fuse-less 200 kA performance➂ 4N for 4000A AABBCC phasing➃ 5N for 5000A AABBCC phasing


July 2003

Sized to Simplify

Magnum DS low voltage power cir-cuit breakers are designed for sim-plified installation and use.

Three physical frame sizesthrough 6000 amperes - More circuit breakers per

square foot- Increased ratings in less space

- Installation economy oftime,material and space

- Closed door circuit breaker lev-ering

- DISCONNECT, TEST and CON-NECT with door closed

Common height, depth and doorcutout- Installation ease and economy

Zero clearance mounting withdrawout cassette- Vertical stacking economy

Four position drawout and fixedmountings- Customer flexibility

Fixed mounting with horizontalor vertical bus bar connections- Accommodate different bus

configurations

Through-the-door drawout- Clear access to trip unit, con-

trols and indicators

13Installation and Use

Common Height, Depth and Cutout (3-Pole Illustration)

Dotted LineRepresents

CommonCutout

14.7”(391mm)

16.4”(417mm)

34.2”(894mm)Double

4000-5000A

16.3”(414mm)Standard

800-3200A

12.5” (318mm)Narrow

800-1600A

Through-The-Door Drawout (Connect Position Shown)

CircuitBreaker

Side View

Rear of Compartment

PrimaryConnections Made

SecondaryConnection Made

CompartmentFront Door


July 2003

Summary

Rigid Frame HousingMagnum DS circuit breakers use arigid frame housing construction ofengineered thermoset compositeresins. This material is strong andlightweight having a strength toweight ratio twice that of steel. Inaddition to high strength structuralproperties, this material has excel-lent dielectric characteristics andresists arc tracking.

The 3-piece construction providessupport while isolating and insulat-ing power conductors:

❶ A 2-piece case encloses currentpaths and arc chambers. Thechambers act to channel arc gasesup and out during interruption.

❷ The operating mechanism andaccessories sit on the front of the

lable accessory items can be identi-fied by name and rating throughviewing windows. An optionalpadlockable cover limits access tothe “ON” and “OFF” pushbuttons.Complete access to the “ON” push-button can be prevented with anoptional prevent close cover.

case and are covered by an insulat-ing front cover. Only the coverneeds to be removed to access themechanism or add accessories.

The overall strength and rigidity ofthe design also contributes to high-er performance capabilities:

Higher Withstand Higher Interrupting

The Magnum DS rigid frame hous-ing design allows for precise con-struction, eliminating the need foradjustments. The significantlyreduced frame deflection duringoperation along with stiff compo-nent mounting results in a longerlife operating mechanism.

Operating Panel The Magnum DS front cover (nextpage) contains a convenient oper-ating panel with clear words andsymbols indicating functions andguiding operations. Field instal

14 Circuit Breaker Features

Magnum DS Front Accessible Operating Mechanism and Accessories

Magnum DS Rigid Frame Construction

Front Cover Case❷ ❶

Secondary Wiring Points

Field Installable Accessories(3 maximum)

Trip Unit

Electric Charging Motor

Manual Charge Handle

Operations Counter (optional)

Padlockable Levering DeviceAccess Door

Breaker Position Indicator

7

2

4

3

5

6

8

1

1

2

3

4

5

6

78


July 200315Circuit Breaker Features

Magnum DS Drawout Circuit Breaker Front Cover

CONNECT

TEST

DISCONNECT

CONNECT

TEST

DISCONNECT

(Red)

(Green)

(Yellow)

(White)

(Green)

(Red)

6

8

Red = ConnectYellow = TestGreen = Disconnect

12

Optional Trip Flag (Pop Out Indicator)

Three Accessory Windows

Trip Unit

Rating Plug

Contact Status (Open-Close)

Spring Status (Charged-Discharged)

2

1

4

3

5

6

Manual “OFF” Button (Push)

Manual “ON” Button (Push)

Manual Charge Handle

Optional Operation Counter

Padlockable Levering Device AccessDoor for Drawout Breaker

8

7 Color Coded-BreakerPosition Indicator

Nameplate

Trip Unit Test Port

Trip Unit Cover with TwoMounting Screws (MountingScrews will Accept CustomerSupplied Lead Security Meter Seals

10

9

11

12

13

14

15

4

9OPEN

PUSH OFF

DISCHARGED

PUSH ON

CLOSED

CHARGED

5

7

1 2

3

4

9

10

1113

14

15


July 2003

2-Step Stored EnergyMechanismMagnum DS circuit breakers areequipped with a 2-step stored ener-gy mechanism. The mechanismclosing springs can be chargedmanually or electrically, providingthe stored energy to CLOSE thebreaker. After the breaker is closed,the mechanism closing springs canagain be charged and the storedenergy mechanism allows thebreaker to OPEN – CLOSE – OPENwithout performing another charg-ing operation.

Main Contact SystemSingle Contact FingerThe performance characteristics ofthe Magnum DS air circuit breakerare primarily attributed to the con-tact design and its movement. Asingle contact finger is the focalpoint of the moving contact. Thissingle contact performs both themain and arcing contact functions

main contact system. The maincontact portion can be viewed asthe “Heel” and the arcing portionthe “Toe.” Its movement is similarto the rocking of a foot forward andbackward from heel to toe and toeto heel. When the circuit breaker isclosed, the “Heel” (main contactportion) is in contact with the sta-tionary contact and carrying cur-rent. At the same time, the “Toe”(arcing contact portion) is separatedfrom the stationary arcing contact. A compact “C Loop” current pathpermits electromagnetic forces, pri-marily produced as a result of afault current, to supplement theclosing contact forces provided bythe operating mechanism. Thishelps to accomplish two importantthings:

Operating mechanism does nothave to be as large or heavy

Higher short time ratings (with-stand) are achievable

on different parts of the same fin-ger.

A complete movable contactassembly is merely a combinationof a number of single contact fin-gers. The exact number of contactfingers required depends upon theframe size and interrupting ratingof the circuit breaker.

The braided connectors (flexibleshunts) used to attach each contactfinger serve several important pur-poses:

Eliminate bolted joints reducinghot spots

Reduce required mounting spacefor primary contacts

Allow contact finger motion for“Heel - Toe” rocking

Heel-Toe ActionThe “Heel-Toe” movement of thecontact fingers is a critical factor inthe efficiency of the Magnum DS


Graphic of Single Magnum DS Contact Finger Magnum DS Standard Frame (12 Finger) Contact Assembly

DualFlexible

Connections

MovingMainContact

Conductive Pad(Heel)

MovingArcing

ContactArea(Toe)

PivotPoint

ContactFinger

“Heel”(Main Contact)

“Toe”(Arcing Contact)


July 2003

Integral Arc RunnerThe integral arc runner serves adual purpose:

Functions as circuit breaker fixedarcing contact

Functions as a critical part of thearc chute

contact fingers to a narrow, side-to-side ledge inside the arc cham-ber. When the contacts are in goodcondition, the narrow ledge is cov-ered by the back end of the con-tacts and not visible. When thenarrow ledge becomes visible withthe primary contacts closed, con-tact replacement is indicated.

Contact Wear Indicator A contact wear indicator providedfor each primary contact structurepermits their condition to be deter-mined. This is accomplished byviewing the contacts while in theclosed position only.

The contact wear indicator is therelative position of the individual

17Circuit Breaker Features

Contact Wear Indication

Magnum DS Arc Running System (Crosssectional View) Integral Arc Runner Viewed from Top of Circuit Breaker

IntegralArc Runner

Contact Wear Indicator - ContactsClosed and in Good Condition

Contact WearInspection Area

(Ledge Now BecomingVisible Under

Contacts)

Contact Wear Indicator - Contacts Closed and Wear is Indicated



(Ledge Not VisibleUnder Contacts)

Side-to-SideLedge

Side-to-SideLedge

yyyyyyyyy

y

yyyyyyyyyyyy

yyyy

yyyyyyyy

yyy

yy

y

xxxxxxxx

xxxxxxxxxx xx

IntegralArc Runner

Top ArcPlate

CurrentFlow

CurrentFlow


July 2003

Arc ChambersArc chambers, one per pole, areused to insulate and isolate eachpole from one another, from therest of the circuit breaker, and fromoperating personnel.

Arc ChuteEnclosed within each arc chamberis an arc chute which mounts overeach set of primary contacts.Alternating V-shaped arc chuteplates effectively attract the arc andinterrupt it. Each arc chute has abaffled cover to assist with thespeed and efficiency of the inter-ruption.


Partial Top Rear View Breaker (One Arc Chute Removed) Arc Chute (Bottom View)

Top Arc Platefor

Arcing Contact

Baffled Cover

Arc Chamber

Alternating“V” Shaped

Plates


July 2003

Manual OperationOn manually operated circuitbreakers, the closing spring ischarged manually. This is accom-plished through the use of the frontmounted spring-charge handle. Ittakes from 5 to 7 downward strokeson the handle to complete thecharging process.

Standard manually operated circuitbreakers are closed and opened byhand using the front mountedManual “ON” and Manual “OFF”buttons respectively. Access tothese buttons can be limited by theuse of an optional, padlockablecover. Complete access to the“ON” button can be prevented withan optional prevent close cover.Spring and primary contact statusindicator windows are located justabove the pushbuttons.

Optional electrically operateddevices are available to automati-cally close or trip open manuallyoperated circuit breakers, and arefield installable.

An optional motor operator is usedto charge the closing spring auto-matically. It can be field installed ina manually operated circuit breaker.Manual circuit breakers are pre-wired for this addition.

Electrical Operation The closing spring is charged auto-matically by the optional motor opera-tor. It can also be manually charged.

Manual “ON” and Manual “OFF” but-tons are also provided as describedunder manual operation.

Through the use of a mechanical anti-pump feature, an open circuit breakeronly accepts one attempt to recloseeven if the close command continues,preventing motor operator burnout.

A standard circuit breaker with electri-cal operation also has optional electri-cally operated devices available toautomatically close or trip open thecircuit breaker.

19Circuit Breaker Features

Magnum DS Circuit Breaker Being Manually Charged

Motor Operator Installed

Motor Operator


July 2003

Breaker Secondary Connectors(Black)Magnum secondary connectorsprovide reliable low impedanceconnections for up to 60 terminalpoints of breaker control wiring.The secondary connectors are blackin color and consist of 2 blocks,each with 30 terminal points. Theterminals receive plug-in type pinand socket wire terminals. Terminalpoints have dedicated locations toreceive the breaker accessorydevices and to facilitate standard-ized automated testing of the con-trol wiring and accessories duringbreaker manufacturing. Labels areprovided on the blocks to assist thecustomer in terminal point identifi-cation and use.

The dedicated secondary connec-tors make it easy to add accessories(like shunt trips, spring releasedevices, etc.) to the breaker at thepoint of use with field option kits.Wiring removal from breaker sec-ondary connector is easily accom-plished using an extraction tool(AMP part number 305183).

Secondary Terminal Blocks(White)White secondary terminal blockscan be provided mounted at the topfront of the breaker for customeruse. The 6-point terminal blockshave hinged IP20 finger-proof cov-ers and are designed to terminatevarious customer wire terminalsincluding ring type terminals. Upto 72 terminal block points can beaccommodated for Standard andDouble frame breakers. Up to 48terminal block points can be accom-modated for Narrow Frame break-ers.

Wire kits and terminal block kits areavailable for use by the panelassembler to custom configure theblack breaker secondary connectorsto the white terminal blocks. As anoption, factory pre-wired cassettesare available for drawout circuitbreakers.


Labels LegendOTS Overcurrent Trip SwitchUVR Undervoltage ReleaseATR Automatic Trip Relay

(520M and 1150 Trip Units Only)

INCOM PowerNetCommunications Network

A BUS (Future Use)A/S Auxiliary Contacts

NEUTRAL Neutral Sensor InputGF SGND Source Ground Input

ZONE Zone InterlockingST Shunt TripSR Spring Release

MOTOR Charging MotorLCS Latch Check Switch

Secondary Connector Labels

Top View Secondary ConnectorsCharged

Mounted Secondary Terminal Blocks

Secondary Wiring Removal Tool

Secondary Terminals and Terminal Wires

OpenhingedCoversClosed Hinged

Covers withTesting Holes


July 2003

Digitrip RMSTrip Unit SummaryMagnum circuit breakers can useany one of a family of microproces-sor-based, true rms sensing DigitripRMS electronic trip units:

Digitrip RMS 220 Digitrip RMS 520 Digitrip RMS 520M Digitrip RMS 520MC Digitrip RMS 1150

The trip units themselves are selfpowered; no external power isrequired to operate the protectivesystems. Current signal levels andthe control power are derived fromintegrally mounted torroidal woundcurrent sensors. The use of tor-roidal wound sensors reduces mag-netizing currents, resulting inimproved metered value accuracyover a broad range of sensor rat-ings.

Common FeaturesAll trip units have a green lightemitting diode (LED), labeledStatus, which blinks approximatelyonce each second to indicate thatthe trip unit is operating normally.This same Status LED will blink at afaster rate if the trip unit is in apick-up or overload condition.

Trip units are interchangeable inthe field, except for Model 520MCand Model 1150. Contact Cutler-Hammer for interchangeabilitydetails.

A functional local test of a major portion of every trip unit’s electron-ic circuitry and the circuit breaker’smechanical tripping action can beverified through the trip unit’s testreceptacle. Every test receptacle issupplied with a test receptaclecover. This is accomplished usinga Digitrip Test Kit which provides asecondary injection test. A smallhand held functional Test Kit canalso be used to check circuitry andmechanical tripping functions. Inaddition, the model 1150 trip unithas an integral testing system.

Rating PlugsAll Magnum DS circuit breaker tripunits use a fixed type rating plug.Rating plugs are available inampere ratings of 200 through 6000amperes. The current rating of therating plug must match the currentrating of the integrally mountedcurrent sensors. Therefore, thecontinuous current rating of the cir-cuit breaker cannot be changed byonly changing the rating plug.

The rating plug performs a numberof functions:

It tells the trip unit what the rat-ing is of the current sensors. Alabel on the rating plug clearlystates that the rating plug andcurrent sensors must have thesame rating.

It determines the maximuminstantaneous setting which is afunction of the current sensorrating.

Lifting the rating plug lid willexpose a small battery which sup-plies power for the trip unit’s causeof trip LEDs.

If the rating plug is removed fromthe trip unit, the circuit breaker willopen (trip) if it is carrying current.The rating plug should always besecured in position when the circuitbreaker is in use.

All trip unit models, except formodel 220, have red LEDs on theface of the trip unit to indicate thecause for an automatic trip opera-tion, for example earth fault, over-load or short circuit. They flash redto make the indication. A battery inthe trip unit maintains the trip indi-cation until the Reset/Battery Testbutton is pushed. The battery issatisfactory if its LED lights greenwhen the Battery Check button ispushed.

A clear, tamper-proof, plexiglasscover sits on the front of the circuitbreaker over the trip unit. Thiscover allows the settings to beviewed but not changed, except byauthorized personnel. The cover isheld in place by two cover screws.Security is insured by the insertionof a standard meter seal throughthe holes in both of the coverretention screws.

21Trip Units and Communications

Magnum Hand Held Tester

Rating Plug Installed in Digitrip 1150


July 2003

Digitrip 220 ①The Digitrip 220 Trip Unit isdesigned to provide basic overcur-rent protection with maximumeconomy. The Model 220 is avail-able on Narrow and StandardFrame Magnum Circuit Breakers upto 3200 amperes. Product featuresinclude:

LI Protection Option Unit Status LED (Green)

Indicator Microprocessor-Based True

RMS Sensing Long Delay Pick-up Setting

fixed at In Long Delay Time Setting fixed

at 10 seconds at 6xIn Long Time (Thermal) Memory

Trip Overtemperature Trip when

temperature exceeds 85°C Instantaneous Pick-up

adjustable from 2x to 10x In andM1

Neutral Protection Test Port with cover to receive

Hand Held Tester① Note:

The Digitrip 220+ is comingsoon.

The Digitrip 220+ will replace theDigitrip 220 Trip Unit some time inlate 2003. The Digitrip 220+ TripUnit will have the following fea-tures when it is phased into pro-duction:

The Long Delay Pick-upSetting will be changed toadjustable from 0.4 to 1.0 Ir

The Long Delay Time Settingwill be changed to adjust-able from 2 to 24 seconds at 6 xIr

LED (Red) Trip Indicators willbe added for Long Delay andInstantaneous Trip Functions

Battery Included to PowerCause of Trip LEDs

Reset/Battery TestPushbutton

Contact Cutler-Hammer for thefuture availability of the Digitrip

22 Trip Units and Communications


July 2003

Digitrip 520 The Digitrip 520 Trip Unit is a versatile trip unit with added fea-tures designed to provideincreased flexibility in overcurrentprotection and coordination. TheModel 520 is available on allMagnum DS Circuit Breakers.Product features include:

LSI and LSIG ProtectionOptions with adjustableInstantaneous Off Setting

Unit Status LED (Green) Microprocessor-Based True

RMS Sensing Long Delay Pick-up Setting

adjustable from 0.4 to 1.0 Ir Long Delay Time Setting

adjustable from 2 to 24 seconds at 6 x Ir

Long Time (Thermal) MemoryTrip

Overtemperature Trip whentemperature exceeds 85°C

Short Delay Pick-up settingadjustable from 2 to 10 Ir and M1

Short Delay Time Settingadjustable flat response from 0.1to 0.5 seconds and I2t Responseat 0.1, 0.3 and 0.5 seconds

Adjustable InstantaneousPick-up Settings, Off, 2x to 10xIn and M1

Ground Pick-up Settingadjustable from .25 to 1.0 x In

Neutral Protection (Model LSITrip Unit)

Ground Time Settingadjustable flat response from 0.1to 0.5 seconds and I2t Responseat 0.1, 0.3 and 0.5 seconds

Zone Interlocking of ShortTime and Ground Fault TimeDelay Functions

Test Port with Cover toreceive Hand Held Tester

LED (Red) Trip Indicators forLong Delay, Short Delay,Instantaneous and Ground FaultTrip Functions

Battery Included to PowerLEDs

Reset/Battery TestPushbutton



July 2003

Digitrip 520M The Digitrip 520M Trip Unitincludes all the features of the 520Trip Unit with the following addi-tions:

LSI,LSIG and LSIA ProtectionOptions with adjustableInstantaneous Off Setting

4 Digit LCD Display Step Pushbutton to Scroll

through the LCD DisplayData: PH1 Phase 1 (A) Current PH2 Phase 2 (B) Current PH3 Phase 3 (C) Current PH4 Neutral Current PH5 Ground Current HI Highest Phase Current OL Overload Condition HELP Trip Unit Error Magnitude of Trip Current

Optional Earth Alarm/PowerSupply Module: Powers the trip unit’s 4Digit LCD Display throughthe breaker secondary con-tacts with a customer sup-plied voltage source:

24-48 Vdc 110 Vac 220 Vac

Provides a ground faultalarm contact (when usedwith LSIA) Provides a ground faulttrip contact (when used withLSIG) Provides a High LoadAlarm contact (when usedwith LSI) Alarm Contact rating (withresistive load):

0.5 Amp at 220 Vac 1.0 Amp at 110 Vac 1.0 Amp at 24-48 Vdc

High Load Indicator LED(RED) (LSI Trip Units)


Note: If an Ground Alarm/PowerSupply Module is not provided, the4 Digit LCD Display will power upwhen the 3 phase currents reachapproximately 20% of the sensorrating or 30% of a single phasecurrent.


July 2003

Digitrip 520MC The Digitrip 520MC Trip Unitincludes all the features of the520M Trip Unit, but also includesampere-based communicationscapability. The 520MC Trip Unit hasthe following additions:

Communications Functionsand Data: Transmit LED (Red) indicateswhen trip unit is transmittingINCOM signal Device Settable INCOMAddress from 001 to 999 hexa-decimal Bkr Status (Open, Closed,Tripped) PH1 Phase 1 (A) Current PH2 Phase 2 (B) Current PH3 Phase 3 (C) Current PH4 Neutral Current PH5 Ground Current LDPU Long Delay Pick-up SDT Short Delay Trip INST Instantaneous Trip GNDT Ground Fault Trip PLUG Plug Trip MCR Making CurrentRelease OTEMP Over Temperature HL High Load (LSI only)

Earth Alarm/Power SupplyModule is Supplied asStandard to power trip unitcommunications functions

The 520MC is designed for applica-tions where communication capa-bility is specified with maximumeconomy. The 520MC Trip Unitcommunicates current-based infor-mation, but does not have the volt-age, power, harmonic or remotecontrol capability of the Digitrip1150 Trip Unit. The 520MC is ideally suited for application onfeeder breakers and can be used intandem with mains and tie breakersthat are equipped with the full capability of the 1150 Trip Unit.

Note: Digitrip 520MC requiresPowerNet Version 3.2 or higher ifPowerNet Software is used.



July 200326 Trip Units and Communications

Digitrip 520M/MC

Control VoltageRemote

GroundFault Trip

GroundFault Alarm

Ground Alarm / Power Supply Module

G-A

larm

K2-

1

K2-

3

K2-

6

Out

pu

t +

Ou

tput

-

J3-1

J3-2

J3-3

J4-4

J4-3

J4-1

A-1

0

A-1

1

A1

4

A-1

5

G-A

LM 1

G-A

LM 2

AT

R V

olt.

AT

R C

OM

J4-2

Contact Rating (resistive load)AC 0.5A @ 230VACAC 1A @ 120VACDC 1A @ 48VDC

Verify input voltage rating before energizing circuit.

When used in conjunction with a T. U. Cat. 5MWLSIG, 5MLSIG, 5CWLSIG or 5CLSIG, will indicate GF trip.

When used in conjunction with T.U. Cat. 5MLSIA or5CLSIA, will indicate GF alarm.

When used in conjunction with a Trip Unit having LSI protection, will indicate High Load alarm.

120 VAC

230 VAC

24-48 VDC

7802C83G01

7802C83G02

7802C82G01

StyleNumber

AvailableInput Voltages

2

2

5

1

3

4

Ground Alarm/Power Supply Module for520M or 520MC Trip Units

Wiring Diagram for 520M Family Models withGround Alarm/Power Supply Module

Trip Unit Cat 5MLSIwill indicate high load alarm.


July 2003

Digitrip 1150+

The Digitrip 1150 + is anenhanced version of the 1150trip unit that provides comprehen-sive protection, metering, communi-cations, relay and remote controlcapabilities. For a complete listingof the Digitrip 1150+ Trip Unit capa-bilities, refer to its InstructionLeaflet. The following is a brieffirst level summary of the 1150+

product features:

LSI,LSIG and LSIA Protection 24 Character Digital LED

Display Unit Status LED (Green)

Indicator Programmable Protective

Settings: I2T and I4T Curves Moderately Inverse, VeryInverse and ExtremelyInverse IEEE Curves IEC Curves Neutral Protection(Model LSI Trip Unit) Instantaneous Off Setting Ground Fault Trip or Alarm Undervoltage andOvervoltage Protection (Tripor Alarm) Underfrequency andOverfrequency Protection(Trip or Alarm) Reverse Power (Trip) Voltage UnbalanceProtection (Trip or Alarm) Phase Rotation (Alarm)

Long Time (Thermal) MemoryTrip

Overtemperature Trip whenthe temperature exceeds 85°C

View Selection Touch Padsfor Local Metering Display: Current (1% Accuracy, ThreePhase, Neutral and Ground Voltage L-L (1% Accuracy) Frequency (± 0.05 Hz) Power & Energy (2%Accuracy)

Kilowatts (kW) Kilowatt Hours (kWH) Kilovoltamperes (kVAR)

% Total Harmonic Distortion Kilovoltamperes (kVAR)

Programmable AlarmContacts

Breaker Control (RemoteOpen & Close viaCommunications) Operations Counter

(Note: continued next page)

kVA Hours Fixed 15 Minute Demand for kW, kVAR & kVA Sliding 15 Minute Demand for kW or kVA Power Factor Including Min and Max

Power Quality Monitoring,Trip and Alarm:

Waveform Capture



July 2003

Test Port with cover to receiveDigitrip Hand Held Tester Power Receptacle forAuxiliary Power Module topower up trip unit when breakeris in the Disconnect or RemovePosition Internal Self-Test Accessory Bus for additionalprogrammable contacts Battery Included to PowerLEDs Reset/Battery TestPushbutton

Communications Functionsand Data:Communications informationand functions are comprehen-sive. Refer to the 1150 Trip UnitInstruction Leaflet I.L.70C1036H03 for complete detailsand capabilities.

Power Relay ModuleThe Power Relay Module is provid-ed with the 1150 Trip Unit to per-form the following features:

Power Supply to power the tripunit’s 24 Character LED display andcommunications functions. Thepower relay module requires anexternal customer supplied voltagesource that is wired through thebreaker secondary contacts. Thesource voltage is selected at orderentry and includes the followingvoltage options with ± 10% toler-ance and 10VA burden.

24-48 Vdc 120 Vac 240 Vac

Programmable Relay Contactsvia the Digitrip 1150 Trip Unit tripand alarm programming menus:

Contact A: Alarming andTripping Relay for use with thetrip unit protective functions. Contact B: Block close relayprohibits the remote closing ofthe circuit breaker Contact C: This latch relaywill hold status upon loss of aux-iliary power

Potential Transformer (PT)ModuleThe PT module provides systemline voltage information to theDigitrip 1150 Trip Unit. It consists ofa 3-phase, 3-wire input and 3-wireoutput step down transformer witha wye to wye hookup. A white dis-connecting plug is provided to dis-connect the PT Module circuit fromthe line voltage during dielectrictesting.

The PT Module primary input volt-age connection is selected whenthe breaker is ordered to accommo-date normal or reverse feed appli-cation. PT Module line-side prload-side voltage connections are made viahard wire termination to the break-er upper or lower conductors.

The normal convention is that thebreaker line side is the upper con-ductors, with power flowingthrough the breaker from top tobottom. In reverse feed applica-tions, the bottom conductors arethe line side with power flowingthrough the breaker from bottom totop. In this case the trip unit willindicate REVERSE POWER, but thereading can be made an absolutevalue by installing a jumper fromB3 to B7 on the breaker secondarycontacts.


Power Relay Module for 1150 Trip Unit

PT Module with Dielectric Disconnect Plug

Alarm Contact Ratings(resistive load):

0.5 Amp at 230 Vac 1.0 Amp at 120 Vac 1.0 Amp at 24-48 Vdc


July 200329Trip Units and Communications

Power Relay Module Connection to 1150 Trip Unit

SR

LL

230 VAC110 VAC

110

220


July 2003

Accessory BusThe accessory bus feature on theDigitrip 1150 Trip Unit permits theapplication of additional discreteprogrammable relay contacts bythe use of one or more DigitalRelay Modules. The accessory busis brought out from the trip unit tosecondary terminals A17 and A18for external connections to theDigital Relay Modules via twistedpair communications cable.

Digital Relay ModuleThe Digital Relay Module is mount-ed by DIN Rail, separate from thecircuit breaker. Up to 4 DigitalRelay Modules (addresses 001 to004) can be applied per circuitbreaker. Each Digital Relay Modulehas has relays with form C contactsrated at 10 amps maximum at 250Vdc. A control voltage source of120 Vac ±20% or 38-125 Vdc isrequired to power each unit.

ProgrammingThe Digitrip 1150 Trip Unit can beprogrammed to drive the DigitalRelay Module relay contacts forany combination of the following:

Auxiliary Switch Bell Alarm Long Delay Trip Short Delay Trip Instantaneous Trip Ground Fault Trip Ground Fault Alarm High Load Alarm Deadman Watchdog


INCOM Network with Remote Master Computer BIM II

1

1

2

3

3

1

2

3

0 0 1 0 0 2

Cut-off Shield or connect tounused customer terminal -- Do not Ground.

Twisted Pair.No. 18 AWG.

BreakerInterfaceMonitor(BIM ) ΙΙ

Typical MagnumCircuit Breakerwith Digitrip Trip Unit

3 Digit INCOM Address

Baud Rate 1200 or 9600

See View A

Typical IBM CompatibleComputer

View A

(Y)

(BL)

Refer to Master Circuit Breaker Connection Diagrams in Appendix C.

Modular telephone connector, Type RJ11, supplied by user.

Ground shielding at computer BIM as shown. Where devicesare daisy-chained, interconnect shielding, but do not ground the connection.

100 ohm ½ watt carbon resistor required at last breaker. See T.D. 17-513.

See Appendix D-11 for programming INCOM function.

AEM is compatible with Digitrip 1150 with AEM firmware version 7.1and theDigitrip 1150 set in the DT 910 COMM mode. (See page D-11)

Breaker Interface Module (BIM ) Version 3.12 is compatible with Digitrip 1150Cat # 1****. BIM version 3.13 or greater is compatible with Digitrip 1150Cat # 1**** and Cat # 11****.

ΙΙ

ΙΙ ΙΙ

ΙΙΙΙ1

1P

NOTICE

100 OHM 1/2W terminating resistor required on network even if network is unused



Digital Relay Accessory Module

110



MODBUS TRANSLATOR Wiring

110



Trip Unit Summary Table

TRIP UNIT TYPE DIGITRIP 220 ➂ DIGITRIP 520 DIGITRIP 520M DIGITRIP 520MC DIGITRIP 1150 ➃

Ampere Range (16) 200A-3200A 200A-6000A 200A-6000A 200A-6000A 200A-6000A

Interrupting Rating at 480V 42 through 100kA 42 through 100kA 42 through 100kA 42 through 100kA 42 through 100kA

rms Sensing Yes Yes Yes Yes Yes

PROTECTION AND COORDINATION

Protection Ordering Options LI LSI, LSIG LSI, LSIG, LSIA LSI, LSIG, LSIA LSI, LSIG, LSIA

Fixed Rate Plug (In) Yes Yes Yes Yes Yes

Overtemperature Trip Yes Yes Yes Yes Yes

Long Long Delay Pickup 1.0 x (In) Fixed 0.4-1.0 x (In) 0.4-1.0 x (In) 0.4-1.0 x (In) 0.4-1.0 x (In)

Delay Long Delay Time I2t at 6 x Ir 10 seconds 2-24 Seconds 2-24 Seconds 2-24 Seconds 2-24 Seconds

Protection Long Delay Time I4t No No No No 1-5 Seconds

(L) Long Delay Thermal Memory Yes Yes Yes Yes Yes

High Load Alarm No No No No 0.5 - 1.0 x (Ir)Short Short Delay Pickup No 200-1000% x (Ir) and M1 200-1000% x (Ir) and M1 200-1000% x (Ir) and M1 200-1000% x (Ir) and M1Delay Short Delay Time I2t at 8 x Ir No 100-500 ms 100-500 ms 100-500 ms 100-500 ms

Protection Short Delay Time Flat No 100-500 ms 100-500 ms 100-500 ms 100-500 ms

(S) Short Delay Time ZSI No Yes Yes Yes Yes

Instantaneous Instantaneous Pickup 200-1000% x (In) 200-1000% x (In) and M1 200-1000% x (In) and M1 200-1000% x (In) and M1 200-1000% x (In) and M1Protection Making Current Release Yes Yes Yes Yes Yes

(I) Off Position No Yes Yes Yes Yes

Ground Ground Fault Alarm No No Yes Yes Yes

Fault Ground Fault Pickup No 25-100% x (In)① 25-100% x (In)① 25-100% x (In)① 24-100% x (In)①

Protection Ground Fault Delay I2t at .625 x ln No 100-500 ms 100-500 ms 100-500 ms 100-500 ms

(G) Ground Fault Delay Flat No 100-500 ms 100-500 ms 100-500 ms 100-500 ms

Ground Fault ZSI No Yes Yes Yes YesGround Fault Thermal Memory No Yes Yes Yes Yes

Neutral Protection (N) Yes Model LSI Only Model LSI Only Model LSI Only Model LSI OnlySYSTEM DIAGNOSTICS

Cause of Trip LEDs No Yes Yes Yes Yes

Magnitude of Trip Information No No No Yes Yes

Remote Signal Contacts No No Yes Yes Yes

Programmable Contacts No No No No Yes

SYSTEM MONITORING

Digital Display No No 4 Char. LCD 4 Char. LCD 24 Char. LED

Current (%) Full Scale Sensor No No Yes Yes Yes +/- 1%

Voltage (%) L to L No No No No Yes

Power and Energy (%) No No No No Yes Apparent Power kVA and Demand No No No No Yes

Reactive Power kVAR No No No No Yes

Power Factor No No No No Yes

Crest Factor No No No No Yes

Power Quality - Harmonics No No No No Yes

% THD No No No No Yes

SYSTEM COMMUNICATIONS

Type No No No INCOM/PowerNet INCOM/PowerNet/TripLink

Power Supply N/A N/A Optional PRM in Breaker PRM in Breaker PRM in Breaker

ADDITIONAL FEATURES

Trip Log (3 Events) No No No No Yes

Electronic Operations Counter No No No No Yes

Testing Method¨➁ Test Set Test Set Test Set Test Set Integral and Test Set

Waveform Capture No No No No Yes

In = Rating Plug and Sensor Rating

Ir = Long Delay Pickup Setting

① Not to exceed 1200 amperes

➁ Test set for secondary injection

➂ Model 220+ will be available in the second half of 2003. Long Delay Pickup will be adjustable 0.4-1.0 x (In), Long Delay time will be adjustable 2-24 seconds. Cause of Trip Indicators with Battery Back-upwill be added. Contact Cutler-Hammer for availability.

➃ Model 1150+ will be available in the second half of 2003. Over and Undervoltage Alarm or Trip, Over and Underfrequency Alarm or Trip, Voltage Unbalance Alarm or Trip, Reverse Power Trip, and PhaseRotation Alarm will be added. Contact Cutler-Hammer for availability.



Current SensorToroidally wound current sensorsare installed at the rear of the cir-cuit breaker on the lower horizontalterminals. They are available inampere ratings of 200 through 6000amperes, and must match the cur-rent rating of the installed ratingplug.

The sensors produce an output cur-rent proportional to the load cur-rent. Under preselected conditionsof current magnitude and time, thesensors furnish the trip unit with asignal and the energy required toopen (trip) the circuit breaker.

The current rating of the installedsensors can be easily viewed fromthe rear of the circuit breakerthrough small viewing windows.The viewing windows are part ofthe sensor cover plate which isremoved to change the sensors.

Neutral current sensors are availablefor customer installation. The addi-tional sensor is not supplied with thecircuit breaker and must be orderedseparately. They are wired to the tripunit through the secondary contactson the circuit breaker.

Mechanical Trip Flag Pop-OutIndicatorThe mechanical trip flag pop-outindicator is an overcurrent indica-tion feature that can be supplied asan option on Magnum DS CircuitBreakers with integral trip units.This device is located just abovethe trip unit on the breaker’s frontfaceplate. In the event the trip unittrips the breaker on an overcurrentcondition, the red trip flag releasesand pops out to give local visualindication. This trip indication is inaddition to any LED trip indicationprovided by the trip unit.

The red flag can be reset by manu-ally pushing it back in. The circuitbreaker can be re-closed, even ifthe flag is not reset. An optionalOvercurrent Trip Switch (OTS) isavailable in the event that an elec-trical lock-out is required on anovercurrent trip condition.

Making Current ReleaseThe Making Current Release (MCR)is a standard safety feature provid-ed on all Magnum DS CircuitBreakers that are equipped withintegral trip units. The MCR pro-vides an instantaneous trip whenclosing on a fault current whichexceeds a specified magnitude.The MCR is non-adjustable, preset

Wiring Plug

ToroidalCurrent Sensor

Sensor RatingViewingWindow

CurrentSensorCover

SensorRating

Rating Plugs and Matching Sensors

Current Sensor Cover in Place Over Sensors Current Sensor Cover and One Sensor Removed

Neutral Sensor (unmounted)

Ratings (Amperes)

200250300400600630

80010001200125016002000

250030003200400050006000

Note: Refer to Tables 3.4, 3.5 and 3.6 in thesection entitled Circuit Breaker CatalogNumber for the availability of sensor and rat-ing plug ratings for specific circuit breakerframe sizes.

For more information visit: www.cutler-hammer.eaton.com

July 2003

to be closed into repeated overloadconditions, the breaker will trip insuccessively shorter times to allowfor the cooling of the load circuit.When the overload conditionreturns to normal, the LTM functionbegins to slowly reset and will fullyreset back to the normal LongDelay Time setting after about 10minutes, provided that anotheroverload is not experienced.

In some applications, for examplefire pumps, electric welders or dur-ing primary injection current test-ing, it may be desirable to defeatthe LTM. This can be accomplishedat the trip unitby moving a jumperlocated inside the cavity behind thetest port cover located at the frontof the trip unit to the Inactive posi-tion. The LTM can be reactivatedby returning the jumper to theActive position.

the trip unit trips the breakerinstantaneously. This allows thebreaker to be applied on a powerdistribution system with a 100kAavailable fault current while main-taining selectivity up to 85kA.

Long Time Memory (LTM)Long Time Memory (ThermalMemory) is a standard feature onMagnum DS Circuit Breakers sup-plied with integral trip units. Thethermal memory function providesovertemperature protection on loadcircuits against the effects ofrepeated overload conditions. If abreaker is closed soon after anoverload trip and the current againexceeds the Long Delay Setting,the LTM reduces the time to trip toallow for the fact that the load cir-cuit temperature is higher than nor-mal due to the previous overloadcondition. If the breaker continues


to trip the breaker when the peakinstantaneous current exceeds 25 xIn (In is established by the breaker’scurrent sensors and rating plug).

The MCR is enabled for only thefirst two cycles following the circuitbreaker closing operation. Whenthe MCR trips the breaker, the redtrip flag of the mechanical indicatorwill pop out and the redInstantaneous LED of the trip unitwill flash if the breaker is soequipped.

Bell Alarm/Overcurrent TripSwitch (OTS)The Bell Alarm/Overcurrent TripSwitch (OTS) is an overcurrent indi-cation feature that can be suppliedas an option on Magnum DS CircuitBreakers with integral trip units.The OTS is physically mounted onthe Mechanical Trip Flag Pop-outIndicator. The OTS Switch includes2 Form C contacts that are wired tothe breaker secondary terminals asshown in the Magnum DS breakerconnection diagram. These con-tacts are available for externalwiring to provide remote trip indi-cation or for electrical lock-out of acircuit breaker as required.

In the event the trip unit trips thebreaker on an overcurrent condi-tion, the red flag of the MechanicalTrip Flag Pop-ot Indicator releasesand pops out and the OTS contactschange state. The OTS Switch canbe reset by manually pushing inthe red trip flag. When the trip flagis reset, the OTS Switch contactsreturn to their normal state.

High Instantaneous TripMagnum DS Circuit Breakers thatare rated 100kA and manufacturedin the Standard Frame with 800 to3200 ampere continuous currentratings (MDSC08 to MDSC32) areequipped with a high instantaneoustrip. This instantaneous trip sys-tem consists of small air core sen-sors (one per phase) which pro-duce a signal and transmit it backto the trip unit. When the fault cur-rent approaches the 85kA with-stand rating of the circuit breaker,

Digitrip RMS 1150 Programmable Trip Unit Installed

Test Receptacle

(withCover)

RatingPlug

AuxiliaryPowerModule

Port

In = 800A

Trip FlagPop-OutIndicator


July 2003

Multiple Source/MultipleGroundMultiple Source/Multiple Groundsensing schemes are also possibleon systems with multiple sensors.

Zone InterlockingZone Selective Interlocking is a standard feature provided onMagnum DS Circuit Breakers thatare supplied with Digitrip 520 orhigher trip units. The trip unitShort Time and Ground Fault TimeDelay Zone Interlock function iswired out to breaker secondary ter-minals B8 and B9 for customer use.

The zone interlock function pro-vides for hard-wired selective cir-cuit breaker coordination in thepower distribution system. Whenemployed, breaker secondary ter-minals B8 and B9 are connected toestablish zones of downstream andupstream breakers using 3 wires:Zin, Zout, and a common wire toestablish the zone.

NOTE: For detailed wiring dia-grams that describe zone selec-tive interlocking schemes andwiring connections, refer tothe trip unit instruction leaflet.

In the event that a fault current onthe system exceeds the trip unitShort Time or Ground Fault pick-upsettings or the Short Delay Setting2xIr is exceeded, the breaker near-est to the fault trips instantaneous-ly. At the same time the trip unitsends a logic signal to the connect-ed upstream trip unit to restrain itfrom tripping immediately and fol-low its protective delay settings.Coordination is maintained, thebreaker closest to the fault tripsfirst and power is only selectivelydisrupted.

NOTE: If zone interlocking isnot employed, it may bedefeated by installing a short-ing jumper across breaker sec-ondary terminals B8 and B9.

Installing a jumper in this mannerdefeats the zone interlock functionand tells the trip unit to follow itsset Short Time and Ground FaultTime protective delays. If breakersecondary terminals B8 and B9 areleft as open circuit, the trip unitShort Time and Ground Fault TimeDelay functions will trip instanta-neously if the system fault currentexceeds the pick up setting.

Over-Temperature TripMagnum DS Circuit Breakersequipped with integral trip unitshave an over-temperature trip func-tion provided as a standard feature.The over-temperature trip isdesigned to trip the breaker whenthe internal temperature of the tripunit exceeds 85°C. This is theapproximate manufacturer’s pub-lished maximum temperature rat-ing for the trip unit electronic com-ponents. An 85°C temperatureinside the trip unit indicates thatthere are much higher tempera-tures and potentially significantheating problems elsewhere in thecircuit breaker enclosure.

When the over-temperature func-tion trips the breaker, the red tripflag of the mechanical indicator willpop-out and the red Long TimeDelay LED of the trip unit will flashis the breaker is so equipped.

Ground Fault Provisions andProtective SchemesAs a standard feature, MagnumDS Circuit Breakers are internallywired with provisions for groundfault protection. However, groundfault protection is provided only ifthe breaker is equipped with a tripunit with optional LSIG protection.

Ground fault protection can be eas-ily added to breakers not originallyequipped with a ground fault tripunit. For example, an LSI trip unitcan simply be changed out with alike model trip unit that has LSIGprotection. Modifications to the cir-cuit breaker internal wiring are gen-erally not required as long as thetrip unit changeout is with a likemodel trip unit.

To provide for maximum applica-tion flexibility, breaker ground faultprovisions are wired out to thebreaker secondary terminals forexternal use. The secondary termi-nals can be easily configured toaccommodate the most commonground fault schemes, including:

NOTE: For detailed wiring dia-grams that describe all groundfault sensing options andwiring connections, refer tothe Trip Unit InstructionLeaflet.

Residual SensingResidual sensing is the standard or

default wiring configurations pro-vided. It is also the most commonmode of ground fault sensing usedin 3-pole and 4-pole breaker appli-cations. One current sensor perpole on each phase conductor isprovided internal to the circuitbreaker. When 3-pole breakers areapplied on 3 phase, 4 wire systems,an external sensor matched to thebreaker sensor ratio is mounted onthe Switchgear neutral bus andwired to the breaker secondarycontacts to connect all sensors inthe residual circuit.

Source Ground SensingSource ground sensing is common-ly found on 3 pole breakers appliedas a main breaker on single-endedradial or on double-ended systemswhere a mid-point grounding elec-trode is employed.

To configure a breaker for sourceground sensing, a shorting jumperis applied to breaker secondarycontacts B6 and B7 to defeat theresidual sensing mode. An exter-nal current sensor is mounteddirectly on the bonding conductorto ground to measure the groundcurrent flowing in the groundingelectrode conductor and all othergrounding conductors. The sensoris then wired to the breaker sec-ondary contacts B4 and B5.

NOTE: The secondary currentrating of the sensors must be1 ampere.

Zero Sequence SensingZero sequence sensing is appliedon main and feeder breakers, andother breakers employed in zoneinterlocking ground protectionschemes.

To configure a breaker for zerosequence sensing, a shortingjumper is applied to breaker sec-ondary contacts B6 and B7 todefeat the residual sensing mode.Zero sequence sensors with 1000:1and 100:1 ratios are available formounting in the switchgear cablecompartment. The sensor internalwindow dimensions are 4.5 x 13.5inches (114 x 342 mm) for accom-modating power cables. The zerosequence sensors are wired tobreaker secondary contacts B4 andB5.



July 2003

Fixed Mounted Circuit BreakersMagnum DS fixed mounted circuitbreakers are commonly applied inCutler-Hammer Pow-R-Line CUL891 certified switchboards andother specialty power distributionenclosures and switchboards man-ufactured by OEMs.

The fixed circuit breaker construc-tion is simple and economicbecause there are no drawout sys-tem components. The breakerbolts directly to the enclosure mainbus, which allows for efficient cur-rent transfer under loaded condi-tions. This improves thermal man-agement and provides for thedesign of compact enclosures withshallow depth.

Full visual and physical access tothe circuit breaker trip unit, con-trols, and indicators is availablethrough the compartment frontpanel. A door frame andescutcheon kit is available as anoption to provide a finished trim tothe front panel cutout. Extensiveaccessorization capability of thebreaker is retained, including tripunits, internal accessories, lock-offdevices, and mechanical interlocks.

Primary TerminationsHorizontal pre-drilled terminal padsare provided as a standard featurefor use in terminating the breakerto the enclosure bus. Optional ver-tical adapters can be factoryinstalled or are available as fieldoption kits to provide the capabilityto terminate the enclosure bus inthe vertical plane. Field option kitsare also available for front connect-ed applications.

Secondary ConnectionsTwo black 30-pin AMP connectorblocks are located at the top frontof the breaker to receive up to 60points of external secondarywiring. A secondary connectionterminal kit is included with eachfixed breaker to provide for severalwiring options.

The most economic solution is toterminate external wiring directly tothe black AMP connector blocks.

tion terminal kit can be used.Catalog Number MSECBK whiteterminal block kits can be pur-chased and assembled to themounting bracket. CatalogNumber MSECWR wire kits can bepurchased to connect the white ter-minal block to the black AMP con-nector block points.

Mounting FeetMetal mounting feet are providedas a standard feature for use insecurely bolting the breaker to theenclosure.

Catalog Number MWK40 wire bun-dle kits with 30 wires 40 incheslong can be purchased for this pur-pose. The wire bundles can alsobe self-fabricated by the enclosuremanufacturer, provided the properAMP terminal and crimping toolare used.

If the benefit of front accessiblededicated terminal blocks at the topfront of the breaker is desired, theterminal block mounting bracketincluded in the secondary connec-

37 Fixed Circuit Breakers

Closeup of Fixed Circuit Breaker’s Connection Possibilities

Fixed Circuit Breaker (front view)

Optional VerticalAdapter

StandardHorizontalConnection

MountingFoot


July 2003

Drawout Circuit BreakersMagnum DS drawout circuit break-ers are commonly applied in Cutler-Hammer Magnum DS UL1558 certi-fied switchgear and other specialtypower distribution enclosures,switchgear and switchboards man-ufactured by OEMs.

The Magnum DS drawout circuitbreaker construction is a through-the-door design. Full visual andphysical access to the trip unit andall breaker controls and indicatorsis available through the compart-ment front panel. For maximumsafety, circuit breaker levering canbe performed with the compart-ment door closed. When the circuitbreaker is in the OPEN position, apadlockable access door can beraised to receive the leveringdevice. No special device isrequired. Levering can be accom-plished with a common 3/8 inchsize square drive and rachet. Wheninserted, the levering device holdsthe levering access door open. Aslong as the access door is raisedopen, the breaker is held in the“trip-free” condition. The breakercan be levered to three positions inthe cell compartment. Color codedposition indicators are provided onthe breaker front panel to providepositive indication of each position:

Green = DISCONNECTYellow = TESTRed = CONNECT.

Secondary DisconnectContactsThe breaker secondary disconnect-ing contacts engage or disconnectwith the cassette secondary con-tacts as the breaker is levered intoor out of the TEST position.

Primary DisconnectingContactsThe primary disconnecting contacts(finger clusters) engage or discon-nect with the cell compartment busstabs as the breaker is levered intoor out of the CONNECT position.

and Double frame breakers havevertical primary disconnects, whileNarrow frame breakers have hori-zontal primary disconnects.

The primary disconnecting con-tacts are mounted on the rear ofthe breaker so that they can be eas-ily inspected or replaced. Standard

38Drawout Circuit Breakers

Circuit Breaker Being Levered

CONNECT

TEST

DISCONNECT

CONNECT

TEST

DISCONNECT

Rear View Standard Frame Breaker

VerticalPrimary

Disconnect

Rear View Narrow Frame Breaker

HorizontalPrimary

Disconnect

supports must be provided. Thedesign of these supports dependsupon the bus bar configuration andshort circuit rating and is theresponsibility of the assemblybuilder.

The cassette's drawout extensionrails can be padlocked to prevent acircuit breaker from being insertedduring maintenance periods. Inaddition, the cassette includes allrequired safety interlocks whichfunction with the circuit breaker'sinterlock system to insure safeoperation.

An arc hood is positioned abovewhere the circuit breaker's arcchutes will be allowing for zeroclearance mounting when verticallystacked in an assembly. Mountingholes are provided at the rear andin the floor of the cassette forsecure mounting in an assembly.


July 2003

Drawout CassetteA drawout circuit breaker is used incombination with a fixed drawoutcassette. The cassette provides forall the required fixed drawout fea-tures as well as fixed primary andsecondary connections. Mountinglocations for cell (TOC) switches,primary safety shutters and variouskey interlocks are part of the cas-sette design.

Cutler-Hammer offers several dra-wout cassette options. The nar-row frame circuit breakermates only with the Narrowcassette which has built in hori-zontal stabs and primary terminals.Optional bolt-on 90 degreeadapters are available to rotate theprimary terminals on the rear of thecassette to a vertical orientation;these can be used on either theline, load or both primary connec-tions.

Standard frame circuit break-ers also offer two optional dra-wout cassettes. Both use verticalstabs internal to the cassette. TheUniversal cassette offers a flatterminal pad on the rear of the cas-sette which will accept customerbus bar connections in various bentconfigurations; optional T-baradapters are available which can berotated to give either vertical orhorizontal terminals. The Basiccassette has a molded back planewith vertical aperturers that can beused when the bus bar connectionswill remain vertical. The OEM cansimply continue bus bar throughthe openings in the back plane toform stabs for the circuit breaker.Note that these stabs must be sil-ver-plated. Optionally, Cutler-Hammer will supply short straightpieces which are pre-plated, andwill bolt into the back plane toaccept bolted bus bar connections.

It should be noted that short circuitcurrents create very large EMforces on the bus bars which mustbe adequately supported by theassembly builder. Outline draw-ings for each cassette give mini-mum distances from the rear of the

39 Drawout Circuit Breakers

Narrow Frame Breaker and Cassette

Basic Cassette Without Optional Stabs

Universal Cassette With Flat Pads


July 2003

Phasing on Double-Wide FrameBreakersMagnum DS circuit breakers man-ufactured in the double-wide framehave two available phasing config-urations which must be confirmedwhen the breaker is ordered.

The phasing convention is deter-mined facing the front of the break-er from left to right. For 4-poleapplications, the neutral is locatedon the left and is rated 100% of thebreaker continuous current rating.The following phasing configura-tions are available:

3-Pole AABBCC4-Pole NNAABBCC

3-Pole ABCABC4-Pole NNABCABC

The type of phasing selecteddepends on how the circuit breakerwill be applied in the enclosure andthe type of Cutler-Hammer powerdistribution enclosure that it will beapplied in.

AABBCC or NNAABBCCPhasing

AABBCC phasing is the conventioncommonly used in Cutler-HammerPow-R-Line C Switchboards usingMagnum DS Circuit Breakers.

The AABBCC convention is recom-mended for most OEMs manufac-turing their own power distributionenclosures. It is ideal for applica-tions where the breaker is mountedsingle high (one breaker in a struc-ture).

ABCABC or NNABCABCPhasing

ABCABC phasing is the conventioncommonly used in Cutler-HammerMagnum DS UL1558 Switchgear.Double-wide breakers with thistype of phasing are designed toaccommodate 2 sets of vertical ris-ers in the same structure. This pro-vides for significant space savingsbecause two or more standardframe feeder breakers can bemounted above or below the dou

value add to customize the powermodules into their own switchgeardesign.

The ABCABC convention is moredifficult for OEMs who manufacturetheir own power distribution enclo-sures to apply. Switchgear busdesign and testing as well as place-ment and balance of the feederbreaker loads are very important toassure that phase currents divideevenly through the double-widebreaker.

ble-wide breaker in the same struc-ture.

Cutler-Hammer offers Magnum DSSwitchgear power modules withABCABC phasing for use by OEMs.Power Modules provide the OEMwith a “shell” frame assembly,which allows for substantial modifi-cation. Power Modules consist ofbase metal structures, compart-ment cells and vertical bus.Typically the OEM will provide the

40Phasing on Double-Wide Breakers

Magnum DS Double-Wide Frame Breaker with AABBCC Phasing (front and rear views)


July 2003

Accessory DevicesA variety of accessory devices areavailable for use with Magnum DScircuit breakers. Unless otherwisestated, they are all consideredoptional devices in the sense thatthey are not provided as standardon a manually operated circuitbreaker. Available accessories areidentified here and discussed ingeneral terms. For more detailedinformation and/or installationinstructions, refer to individualinstruction leaflets dedicated to theaccessories.

Magnum DS circuit breaker acces-sories are designed to fit all framesizes. The accessories fall into oneof three categories:

• Plug-in electrical• Internal electrical• Mechanical

Plug-In Electrical Accessories There are four Magnum DS Plug-Inelectrical accessories. Three can beviewed for identification by nameand rating through viewing win-dows located in the right front ofthe circuit breaker(Figure 1). Allfour are plug-in type and can befactory installed or field installedusing a UL listed kit.

The four Plug-In accessories are:

• Shunt Trip (ST)• Spring Release (SR)• Undervoltage Release (UVR)• Auxiliary Switch

Shunt Trip (ST) - The ST (ShuntTrip Device, Figures 2 and 3) is anoptional accessory device that ismounted internal to the circuitbreaker. The ST acts to electricallyopen the circuit breaker when itstrip coil is energized by a rated tripvoltage signal (Table 1) that isapplied through the breaker sec-ondary contacts, typically by a con-trol switch or other similar device.The ST has a dedicated auxiliaryswitch with contacts that changestate as the breaker opens, cuttingoff trip voltage signal to the tripcoil.

41Accessory Devices

Operational ① OpeningControl Voltage Range Inrush Power Time Voltages 70-110% Consumption (ms)24 Vdc

48 Vdc

110-125 Vdc

220-250 Vdc

110-127 Vac

208-240 Vac

17-26 Vdc

34-53 Vdc

77-138 Vdc

154-275 Vdc

77-140 Vac

146-264 Vac

250 W

250 W

450 W

450 W

450 VA

450 VA

35

35

35

35

35

35

① Required for less than 35 ms

Table 1 Shunt Trip Ratings

Figure 1 Through-the-Window Electrical Accessories

Accessory Viewing Windows

Figure 2 Shunt Trip with CutoffSwitch

Figure 3 Shunt Trip Switch Installed

A second shunt trip (with the sameor different control voltage) can bemounted in the same space as theUndervoltage Release (UVR).When a second shunt trip is used,one of the auxiliary switch stagesmust be used to provide the tripcoil cut off contact.


July 2003

• Latch Check Switch WiredFor External Use - The LCS canalso be wired to the breaker sec-ondary contacts. One Form Ccontact is provided for remoteindication that the breaker isready to close for use in breakerexternal customer control wiring.

Undervoltage Release - Theundervoltage release is an optionaldevice on both manually and elec-trically operated circuit breakers(Figure 5). It opens the circuitbreaker when its supply voltagefalls to between 35-60% of ratedvoltage. If the release is not ener-gized to 85% of its supply voltage,the circuit breaker cannot be closed electrically or manually(Table 3).

Latch Check Switch (LCS) - TheLCS (Latch Check Switch) is anoptional accessory switch mountedinternal to the circuit breaker thatchanges state when the breaker isready to close (the closing springsare fully charged and trip latch is inthe reset position). The LCS is veryuseful in fast transfer and automat-ic transfer applications when it isimportant that the breakerresponds to close on a single closevoltage signal of rated magnitude.The LCS is available in two ver-sions:

• Latch Check Switch Wired ToSpring Release - The LCS canbe wired directly to the SpringRelease Device to provide a con-tact closure when the breaker isready to close. This delays thevoltage signal to the SpringRelease until the breaker is readyto close.

Spring Release (SR) - The SR(Spring Release Device, Figure 4) isan optional accessory device that ismounted internal to the circuitbreaker. The SR acts to electricallyclose the circuit breaker when itsclose coil is energized by a ratedclose voltage signal (Table 2)applied through the breaker sec-ondary contacts, typically by a con-trol switch or other similar device.

The breaker must be ready to closefor the SR to close the circuit break-er. The breaker stored energysprings must be fully charged andthe trip latch must be in the reset(not the trip) position. If the closevoltage signal is applied beforethese two conditions are met, theSR will not close the circuit breaker.The close voltage signal must beremoved and then reapplied at atime when the breaker is ready toclose.

42 Accessory Devices

Figure 4 Spring Release withOptional Latch Switch

Operational ① ClosingControl Voltage Range Inrush Power Time Voltages 70-110% Consumption (ms)

Table 2 Spring Release Ratings

① Required for less than 200 ms

24 Vdc

48 Vdc

110-125 Vdc

220-250 Vdc

110-127 Vac

208-240 Vac

17-26 Vdc

34-53 Vdc

77-138 Vdc

154-275 Vdc

77-140 Vac

146-264 Vac

250 W

250 W

450 W

450 W

450 VA

450 VA

40

40

40

40

40

40

Figure 5 Undervoltage Release Figure 6 Shunt Trip, Spring Releaseand Undervoltage Release Installed


July 2003

Auxiliary Switch - An auxiliaryswitch is an optional accessorydevice that is mounted internal tothe circuit breaker. Each auxiliaryswitch stage (Figure 7) has 2a (nor-mally open) and 2b (normallyclosed) contacts wired to the break-er secondary contacts for customeruse in remote indication or externalelectrical schemes. (See Table 4for auxiliary switch contact ratings.)The contacts change state as thebreaker opens and closes.

A maximum of 3 switch stages of2a/2b contacts can be mounted inMagnum Standard and DoubleFrame Circuit Breakers for a total of6a and 6b available contacts. Ifmore than two switch stages arerequired on the Narrow FrameBreaker, refer the application toCutler-Hammer. Due to the 48point secondary terminal block lim-itation on the Narrow FrameBreaker, only 2 stages of 2a/2b con-tacts can be mounted if the fullcompliment of breaker internalaccessories are employed.However, if the breaker is not fullyaccessorized, the Narrow FrameBreaker can accommodate 3 auxil-iary switch stages of 2a/2b con-tacts.

Internal Electrical AccessoriesOther electrical accessories aremounted inside the circuit breaker.They can be factory or siteinstalled. There are two differentinternally mounted accessories:

• Overcurrent Trip Switch (BellAlarm)

• Motor Operator

Overcurrent Trip Switch (BellAlarm) - An overcurrent trip switch(bell alarm) is an optional device(Figure 8). It provides an electricalindication when a circuitbreaker trips as a result of the tripunit reacting to an overcurrent con-dition. Opening as a result of a cir-cuit breaker’s manual open button,shunt trip or undervoltage releasedoes not cause the overcurrent tripswitch to operate. The overcurrenttrip switch has (2a 2b) Form C con-tacts (Table 4).

The status of the contacts changewhen the trip indicator pops out.This permits the switch to be usedas an alarm or in conjunction with aspring release to block a subse-quent remote electrical closing sig-nal.

43Accessory Devices

Table 3 Undervoltage Release

Operational Dropout ① ➁ Opening Control Voltage Range Volts Inrush/Continuous Time Voltages 85-110% 30-60% Power Consumption (ms)24 Vdc ①

32 Vdc ①

48 Vdc ①

110-125 Vdc ①

220-250 Vdc ①

110-127 Vac ➁

208-240 Vac ➁

380-415 Vac ➁

480 Vac ➁

600 Vac ➁

20-26 Vdc

27-35 Vdc

41-53 Vdc

94-138 Vdc

187-275 Vdc

94-140 Vac

177-264 Vac

323-457 Vac

408-528 Vac

510-660 Vac

7-14 Vdc

10-19 Vdc

14-29 Vdc

33-75 Vdc

66-150 Vdc

33-76 Vac

62-144 Vac

114-249 Vac

144-288 Vac

180-360 Vac

250 W/18 W

275 W/15 W

275 W/18 W

450 W/10 W

450 W/10 W

450 VA/10 VA

400 VA/10 VA

480 VA/10 VA

400 VA/10 VA

400 VA/10 VA

70

70

70

70

70

70

70

70

70

70

① Required for 200 ms

➁ Required for 400 ms

Figure 8 Mechanical Trip Indicatorwith Associated Overcurrent TripSwitch

MechanicalTripIndicator

Figure 7 Auxiliary Switch (2A/2B)

Table 4 Auxiliary Switch,Overcurrent Trip Switch andCell Switch Contact Ratings

Control Contact RatingVoltages Inductive Load

(amperes)250 Vac

125 Vdc

250 Vdc

10

0.5

0.25


July 2003

Motor Operator - A Motor opera-tor is an electric motor assemblyinternally mounted in the circuitbreaker (Figures 9 and 10). Itcharges the closing springs electri-cally for remote or local operation.The motor operator can be factoryor site installed (Table 5).

To convert a manually operated cir-cuit breaker to an electrically oper-ated circuit breaker, a UL listedmotor operator kit is available.

Spring Charged Indication -Spring charged indication is avail-able on Magnum DS circuit break-ers that are equipped with motoroperators. The motor operator cir-cuit includes a motor cut-off switchthat changes state at the end of theclosing spring charging cycle. Thecut-off contact is wired to breakersecondary contact terminal pointsB14 and B15 for remote indicationand customer use in externalbreaker control schemes.


Figure 10 Motor Operator Installedin Narrow Frame Circuit Breaker

Figure 9 Motor Operator Kit

Table 5 Motor OperatorControl ① Operational Running Typical Power Maximum

Voltage Range Current Inrush Consumption Charging Time Voltages 85-110 % (A. avg.) Current (watts or VA) (seconds)

24 Vdc

48 Vdc

110-125 Vdc

220-250 Vdc

110-127 Vac

208-240 Vac

20-26

41-53

94-138

187-225

94-140

177-264

12.0

5.0

2.0

1.0

2.0

1.0

300% of Running

500% of Running

600% of Running

600% of Running

600% of Running

600% of Running

300

250

250

250

250

250

5

5

5

5

5

5

① AC voltages are 50/60Hz


July 2003

Mechanical Accessories

There are six optional mechanicaltype accessories:

• Operations Counter• Cassette Safety Shutters• Cassette Cell Switch• Door Escutcheon• IP54 Cover• Mechanical Interlock

Operations Counter - The opera-tions counter is a mechanicaldevice used to provide a record ofthe number of circuit operations. Itis mounted in the lower right por-tion of the circuit breaker and canbe viewed through the front cover(Figure 11).

Cassette Safety Shutters -Automatically operated insulatingtype safety shutters are availablefor use with the drawout cassette.When the drawout circuit breaker islevered from the CONNECT posi-tion, the shutters automaticallyclose to cover the fixed primarycontacts (Figure 12). When the cir-

Door Escutcheon - The doorescutcheon is a molded frame usedto seal the space between the cir-cuit breaker and the compartmentdoor cutout. It is supplied with amounting gasket (Figure16).

IP54 Cover - A hinged domeshaped waterproof cover attachesto the metal compartment door toprovide waterproof protection forthe circuit breaker (Figure 17).

Cassette Cell Switch - The cas-sette cell switch (Figures 14 and15) is also known as the cell posi-tion switch or the TOC (TruckOperated Cell) switch. The cellswitch is an optional accessory thatis provided in kit form for installa-tion by the panel assembler. Up to3 cell switch stages, each with 4Form C contacts can be mountedon the right hand side of the cas-sette. (See Table 4 for cell switchcontact ratings.) One stage can bemounted on each of the DISCON-NECT, TEST, or CONNECT mount-ing locations on the cassette. Theswitch contacts change state whenthe breaker is levered into the DIS-CONNECT, TEST, or CONNECTpositions. Wires are provided foreach set of Form C contacts for ter-mination to the breaker secondaryterminal blocks (white) or othercustomer supplied terminal blocksin the breaker cell compartment.The contacts are generally used forremote indication or for customeruse in external breaker controlschemes.

45Accessory Devices

Figure 16 Door Escutcheon andGasket

Figure 17 IP54 Cover

Figure 11 Operations Counter

Operations Counter

Figure 12 Safety Shutters in ClosedPosition

Figure 13 Safety Shutters in OpenPosition

Figure 15 Cell Switch (DrawoutPosition Indicator) Unmounted

Figure 14 Cell Switches Mountedon Cassette


July 2003

Mechanical Interlock - A familyof mechanical interlocks are avail-able to interlock the closing of twoor three Magnum circuit breakers.The mechanical interlock holds oneor more circuit breakers tripped(prevents closure) when others areclosed. A lever assembly is mount-ed on each breaker which inter-faces with the pole shaft and thetripper bar. The lever assembliesare interconnected with eithercables or rods, depending upon therelative orientation of the breakers.Rods can be used only when thecircuit breakers to be interlockedare vertically stacked. Cables canbe used for any orientation of thebreakers. Mechanical interlocks areavailable for both fixed and dra-wout circuit breakers and in both 2-way and 3-way versions. An illus-tration of a 2-way cable interlockmounted on two drawout circuitbreakers is shown in Figure 18. Inaddition, refer to Table 6 for thepossible mechanical interlock con-figurations.


Figure 18 Cassette-Mounted 2-WayCable Interlock

Table 6 Mechanical Interlock Configurations

Type of Number of Breakers Possible Interlock Interlocked Description of Interlocks Interlock Logic

Type 2

Type 31

Type 32

Type 33

Across 2 Breakers

Across 3 Breakers

Across 3 Breakers

Across 3 Breakers

One Normal Power Supply (A)One Emergency Power Supply (B)

Two Normal Power Supplies (A & C)One Emergency Power Supply (B)

Circuit Breakers A and C can be closed if B isopen. B can only be closed if A and C are open.

Two Power Supplies (A & C)One Bus Tie Breaker (B)

One or two breakers out of 3 can be closed at thesame time.

Three Power Supplies (A, B & C)Normal or Emergency, only one of which can be

closed at a time.

A B0 01 00 1

A B C0 0 01 0 00 1 00 0 11 0 1A B C0 0 01 0 00 1 00 0 11 1 00 1 11 0 1A B C0 0 01 0 00 1 0


July 2003

Breaker Lock OFF DevicesMagnum DS Circuit Breakersare equipped with a variety oflock off devices for both theCircuit Breaker and the DrawoutCassette to maximize safety duringequipment operation and mainte-nance.

Padlockable Levering DeviceAccess Door - The leveringDevice access door includes pad-lock provisions as a standard fea-ture on all drawout circuit breakers.It is designed to receive a padlockup to 0.312 inches (8 mm) in diam-eter. When the access door is pad-locked shut, the breaker leveringtool cannot be inserted, preventingthe breaker from being levered toanother position (Figure 1).

Access Door - The padlockablepushbutton cover is an optionalfactory configured or field optionkit accessory that mounts on thebreaker faceplate. It is availablewith either molded plastic or metalframes with clear plastic hingedblocking plates (Figure 2). Whenthey are closed and padlocked, theblocking plates prevent access tothe breaker PUSH OFF and PUSHON mechanical pushbuttons. Thisdevice can also be configured withan additional plate to block only thePUSH ON pushbutton. A smallhole is pre-drilled in the blockingplates to provide emergency accesswith a special tool as required perthe National Electric Code. The

must specify if the lock is to belocated on the left or right-handside of the cassette. Wheninstalled, the device holds thebreaker trip-free when the breakeris levered to the CONNECTED posi-tion. This prevents the breakerfrom being closed and circuit ener-gized.

Single or multiple cylinder Kirk,Castell or Ronis locks can beaccommodated. The device can beused with commonly applied break-er interlocking schemes such asMain-Tie-Main configurations, etc.

Cassette Shutter LockProvisions - As a standard fea-ture, the narrow frame cassetteshutter system includes provisionsto padlock the shutter in theCLOSED position when the breaker iswithdrawn. The shutter lock provi-sions will receive a padlock with upto a 0.312 inches (8 mm) diameter.

padlockable pushbutton cover willreceive a padlock with up to a 0.312inches (8 mm) diameter.

Breaker OFF Key LockProvisions - The breaker OFF keylock is an optional accessory thatallows the breaker to be locked inthe OFF position with the keyremoved, preventing the breakerfrom being closed. It is primarilyintended for use on fixed mountedcircuit breakers, but can also beapplied on drawout breakers(Figure 3).

When selected as a factory config-ured option, the breaker includes apre-drilled hole covered with aplastic cap on the breaker frontcover. A lock provisions hardwarekit is shipped with the breaker tofacilitate installation of a singleKirk, Castell or Ronis cylinder lock.The cylinder lock is generally pro-vided and assembled to the breakerat the point of use by the enclosuremanufacturer or customer. Forexisting breakers, a breaker keylock provisions field option kit isalso available. To facilitate installa-tion, a drill point mark is located onthe inside of the breaker frontcover to identify the drilling loca-tion for the key lock installation.

Cassette Lock Provisions - Thecassette lock provisions field optionkit is an accessory that mounts onthe side of a circuit breaker cas-sette (Figure 4). The customer

Breaker Lock OFF Devices 47

Figure 1 Closeup of PadlockableLevering Device Access Door

Figure 2 ON-OFF PushbuttonLockable Cover Plate

Figure 3 Cover Mounted Key Lock

“OFF”Key Lock

Figure 4 Cassette Mounted KeyLock


July 2003

Ambient Temperature

This table gives derating factors forcircuit breakers operating in switch-boards at various internal ambienttemperatures. The switchboard’sinternal ambient should be estimat-ed using an industry accepted cal-culation method.

Bus Bar Recommendations

The bus bar sizes shown in thetable are those specified by ANSIand/or used by Cutler-Hammer intheir circuit breaker type testing.They are for 3 meter long bus barwith the faces vertical and paintedflat black. For other bus bar config-urations, larger bus bar sizes maybe required or the circuit breakermay have to be derated. Refer tothe table in this section entitled“Circuit Breaker Continuous CurrentRatings at Different Ambients” forderating information at higherambient temperatures. Refer to thetwo graphic examples below.

48 Application and Installation Information

Circuit Breaker Continuous Current at Different Ambients

Continuous CurrentCurrent By BreakerType (Amperes)

MDN-408, 508, 608MDS-408, 508, 608, 808, C08

MDN-412, 512, 612

MDN-416, 516, 616MDS-516, 616, 816, C16

MDS-620, 820, C20

MDS-625, 825, C25

MDS-630, 830, C30

MDS-632, 832, C32

MDS-84N, C4N, 840, C40

MDS-85N, C5N, 850, C50

MDS-C6N, C60

Ambient Temperature (°C)

40

800

1200

16001600

2000

2500

3000

3200

40005000

????

45

800

1200

16001600

2000

2500

3000

3200

40005000

????

50

800

1200

16001600

2000

2500

3000

3200

40005000

????

55

800

1200

16001600

2000

2500

3000

3200

40005000

????

60

800

????

????1600

2000

2500

3000

3200

40005000

????

70

800

????

????1600

2000

2500

3000

3200

40005000

????

Bus Bar Sizes and Quantities

Maximum ServiceCurrent, Amperes(40°C Ambient)

800100012001600200025003200400050006000

Circuit BreakerFrame (MDN- &

MDS-)

08101216202532405063

RecommendedBus Bar Quantities

and Sizes

(in)(1) .25 x 3.0(2) .25 x 2.0(2) .25 x 3.0(2) .25 x 3.0(3) .25 x 3.0(4) .25 x 3.0(3) .25 x 6(4) .25 x 6(5) .25 x 6(6) .25 x 6

(mm)(2) 5 x 50(2) 5 x 60(2) 5 x 80(2) 5 x 100(3) 5 x 100(4) 5 x 100(3) 10 x 100(4) 10 x 100(5) 10 x 100(6) 10 x 100

(T) (3in)

(.25in)(W)

Example 1

T = Thickness of Bus BarW = Width of Bus Bar

Example 2

Illustration of 2 .25 inch by 3 inch BusBars stacked to carry 1600 amperes

Altitude Rating Factors

Magnum DS circuit breakers can beapplied at their full voltage and cur-rent ratings up to a maximum alti-tude of 2000 meters above sealevel. When installed at higher alti-tudes, the ratings are subject to cor-rection factors. Short circuit cur-rent is not affected as long as thevoltage is rated in accordance withthe table.

Watts Loss Data

Refer to the table for Magnum DSresistance and watts loss data to beused in temperature rise calcula-tions.

49Application and Installation Information


July 2003

Altitude(Meters)

200021502300245026002750290030503200335035003650380039505000

VoltageCorrection

1.0000.9890.9760.9630.9500.9330.9170.9000.8830.8670.8500.8330.8170.8000.700

CurrentCorrection

1.0000.9980.9950.9930.9900.9870.9830.9800.9770.9730.9700.9670.9630.9600.940

Altitude Rating Factors Magnum DS Resistance and Watts Loss Data

Circuit Breaker Frame

MDN-408MDN-412MDN-416



MDS-408MDS-508MDS-608MDS-808MDS-C08

MDS-516MDS-616MDS-816MDS-C16

MDS-620MDS-820MDS-C20




MDS-84NMDS-840MDS-C4NMDS-C40

MDS-85NMDS-850MDS-C5NMDS-C50

MDS-C6NMDS-C60

DC Resistance(µΩ/pole)

Fixed242424

242424

181818

24???151212

??151212

121212

888

???

888

?6?6

?4?4??

DC Resistance(µΩ/pole)Drawout

606060

424242

363636

60???332424

??332424

242424

202020

??????

202020

??12??12

??10??10

??

AC Watts Loss ①(Total 3 Poles)

Fixed 6095150

60150240

45110180

60???403530

??150120120

190190190

200200200

?????????

320320320

???380??380

???400??400

??

AC Watts Loss ①(Total 3 Poles)

Drawout 150240370

110260420

90220360

150???857060

??330240240

330380380

500500500

?????????

800800800

???750??750

???1000??

1000

??

① Estimate based on RAC/RDC = 1.30, total loss at fully rated current.

Recommended ElectricalClearances

The following electrical clearanceinformation is provided as guid-ance when installing drawout orfixed circuit breakers in an enclo-sure. Refer to the graphic repre-sentations and the associateddimensional table.

Recommended Enclosure Size and Ventilation

A graphic of a typical enclosureand an associated table of dimen-sions are provided as guidance forcircuit breaker enclosure designwith respect to the enclosure sizeand the required amount of ventila-tion space.

50 Application and Installation Information


July 2003

Breaker Enclosure To Insulated To Grounded With Cell SwitchMounting Dimension Surface Metal Surface or Key Lock

Drawout A 0 0 0B 1.0 1.0 1.0/2.9

Fixed A 5.9 9.8 -B 1.2 2.8 -

Electrical Clearance Dimensions (in)

Recommended Enclosure Electrical Clearances

Do Not Block VentOpenings in

Drawout Cassette

4.0

Cell Switch

(optional)

Key Lock(optional)

A A

B

Width Cassette Width + 3.0 in

Height 21.7 in

Depth 17.7 in (Front Compartment)

Ventilation 25 in2 (800-3200A)50 in2 (4000-6000A)

Recommended Enclosure/Ventilation Dimensions

H

W

D

V

Minimum Enclosure Size and Ventilation

D

W

H

V

V

Top or RearVent Open Area

Rear or BottomVent Open Area

Suggested Tools Maintenance Overview General Cleaning When to Inspect What to Inspect

Suggested ToolsA large number of different toolsare not required to maintainMagnum DS circuit breakers. Thefollowing tools are suggested:

Flat blade screw driver Phillips head screw driver 3/8” socket (rachet) wrench 6” socket extension with 3/8”

square drive 10mm socket 17mm socket Secondary wiring removal tool

Maintenance OverviewDesign tests and actual installationexperience shows the Magnum DSlow voltage circuit breaker to havedurability well beyond minimumstandards requirements. However,because of the variability of appli-cation conditions, inspection andmaintenance activities should takeplace on a regularly scheduledbasis.

These circuit breakers are designedto be relatively maintenance free.The maintenance consists mainlyof keeping them clean. Cleaningand preventive measures are partof any good maintenance program.Plant operating and local condi-tions can vary to such an extentthat the actual schedule should betailored to the conditions.Maintenance record sheets shouldbe completed each time mainte-nance is performed. Careful andaccurate documentation of mainte-nance activities provides a valuablehistorical reference on equipmentcondition over time.

General CleaningCircuit breaker cleaning should bepart of an overall maintenance pro-gram that includes the assembly inwhich the circuit breaker is

compartment onto the compart-ments extension rails. When theinspection is complete, the circuitbreaker can be levered to the TESTposition to check any electricaloperations of the circuit breaker.During movement of the circuitbreaker out of and back into itscompartment, be alert for any signsindicating improper operation.

During the inspection of fixed typecircuit breakers, bus systems sup-plying the circuit breakers shouldbe de-energized for convenienceand safety.

Once the circuit breaker has beencleaned, visually inspect it for anysigns of damage, missing or looseparts and unusual wear. On dra-wout circuit breakers, inspect theprimary disconnect finger clustersfor signs of wear and erosion.Make appropriate corrections foranything found out of order.

The trip unit can also be functionallytested during this general inspec-tion.

Arc Chute When the circuit breaker experi-ences a high level fault or duringregularly scheduled maintenanceperiods, arc chambers and theirenclosed arc chutes should beinspected for any kind of damageor dirt. Be especially alert for signsof erosion of the V-shaped platesinside the arc chutes.

Primary Contacts Since the arc chutes are removed,this is an ideal time to inspect pri-mary contacts for wear using thecircuit breaker’s contact wear indica-tors. Visually inspect each primarycontact structure for signs of wearand/or damage. This inspection isconducted with the circuit breakerclosed. Look straight down into thearc chamber when observing theclosed contacts. If the contactsshow unacceptable wear as indicat-ed by the contact wear indicator dis-cussed earlier in this document, thecontacts should be replaced.

installed. Loose dust and dirtshould be removed from externalsurfaces using an industrial qualityvacuum cleaner and/or lint freecloth. Unless otherwise indicated,never use high pressure blowingair, since dirt or foreign objects canbe driven into areas, such as theoperating mechanism. Never use awire brush to clean any part of thecircuit breaker.

When to inspectDo not wait for specific scheduledperiods to visually inspect theequipment, if there are earlieropportunities. For this type ofequipment, it is recommended thata general inspection and lubrica-tion take place after the number ofoperations listed in the “InspectionFrequency” table. This type ofgeneral inspection should also takeplace at the end of the first sixmonths of service, even if the num-ber of operations indicated in thetable has not been reached.

After the first inspection, inspect atleast once a year. If these recom-mended inspections show no main-tenance requirements, the periodcan be extended to a more eco-nomical point. Conversely, if therecommended inspection shows,for instance, a heavy accumulationof dirt or other foreign matter thatmight cause mechanical, electricalor insulation damage, the inspec-tion and maintenance intervalshould be decreased.

What To InspectWhat to inspect and to what extentis dictated by the nature of themaintenance function. Routineinspections require one type ofobservation. Inspections followinga known high level fault requiremore detailed inspections. Wheninspections are complete, be cer-tain that any parts removed duringthe inspection process are properlyput back in place.

General Circuit Breaker A drawout type circuit breakershould first be withdrawn from its

51Maintenance Guidelines


July 2003

offer 60 front mounted dedicatedsecondary wiring points, each wiringpoint having finger safe contacts toIP20 and shall allow no more thantwo wires per terminal.

The Torroidal Current Sensors, foruse with the trip units, shall bemounted at the rear of the circuitbreaker and shall have a back coverwindow that will permit viewing thecurrent sensor rating on the back ofthe breaker. A front of breakermounted trip unit will have a RatingPlug which will offer indication ofthe actual sensor rating on the frontof the Trip Unit.

On Drawout type Circuit Breakers,the Racking-in device shall bemounted integral to the breaker.This mechanism will be located onthe front of the breaker. A breakerposition indicator shall be locatedon the faceplate of the breaker. Thisindicator shall offer clear color indi-cation of the breaker position in thecassette. These positions shall be‘Connected’ (Red), ‘Test’ (Yellow)and ‘Disconnected’ (Green). Theracking-in door shall be interlockedso that when the breaker is in theclosed position, the breaker racking-in door shall not open. As a safetyfeature the breaker spring mecha-nism shall discharge as the breakeris withrawn from the ‘Connected’ tothe ‘Disconnected’ position.

On Drawout type Circuit Breakers,the finger clusters shall withdrawwith the breaker for safe and easyinstallation.

All Power Circuit Breakers shall bedesigned, manufactured and test-ed in accordance with ANSIC37.13, C37.16, C37.17, C37.50, UL1066 and NEMA SG-3 Standards.To verify this, the circuit breakershall carry a UL label.

Circuit breakers shall be Cutler-Hammer Magnum type orapproved equal.

[24V/dc] [48Vdc] [110/125Vdc][220/250Vdc] motor operators,①[OPEN/CLOSE pushbuttons] [con-trol switch] plus a red and greenindicating flag to indicate breakercontact position. ①[DC source shallbe supplied from a remote batterysystem] [AC source shall be takenfrom a (remote source) (controlpower transformer internal to thetrol switch] plus a red and greenindicating flag to indicate breakercontact position. ①[DC source shallbe supplied from a remote batterysystem] [AC source shall be takenfrom a (remote source) (controlpower transformer internal to theswitchgear assembly)]. The charg-ing time of the motor shall notexceed 10 seconds.

The symmetrical interruptingcapacity and short time currentratings respectively at 240, 480and 600VAC shall be: ①[42/42kA][65/65kA] [85/85kA][100/85kA][100/100kA].

To facilitate lifting, the Power CircuitBreaker shall have integral handleson the side of the unit, and shallhave optional lifting brackets avail-able for hoisting.

The Primary contacts of the unitshall have an easily accessibleContact Wear Indicator to indicatemain contact erosion.

The Power Circuit Breaker shallhave a trip flag pop-out indicator toconfirm an overcurrent trip signal.The trip flag shall not be interlockedto the breaker reset to facilitateremote reset of the breaker.

The Power Circuit Breaker shall havethree windows in the front cover tooffer clear indication of closing oropening electrical accessories thatare mounted in the breaker. Eachaccessory will have a label to indi-cate its function and voltage. Theaccessories shall be plug and locktype to allow easy field installation.They shall be modular in design andshall be common to all frame sizesand ratings.

Each Power Circuit Breaker shall


July 2003

Power Circuit BreakersAll protective devices shall be lowvoltage ①[drawout ] [fixed] typepower circuit breakers. The breakershall be available in two physicalframe sizes covering current ratingsfrom 800-5000 amperes. They shallhave a common height and depthacross the range. All breakers shallbe suitable for application in theirintended enclosures for 100% oftheir continuous ampere ratingassuming an enclosure.

All breakers shall be equipped witha true, two step stored energymechanism providing a maximum5 cycle closing. All the energy forclosing the breaker shall be storedand held in readiness pending arelease to close action. Manuallyoperated breakers shall be convert-ible to electrical operation by fieldfitting of an internally mountedmotor operator. Both manual andelectrically operated breakers shallhave multiple charge/close provi-sions providing the following possi-ble sequence: charge-close-recharge-open-close-open. As asafety feature, provisions shall beavailable to manually discharge thestored energy without closing thebreaker. Anti-pump provisions shallbe provided as standard.

The breaker shall be manuallyoperated unless electrical operationis indicated on the drawings. Thecircuit breaker control face plateshall include color coded visualindicators to indicate contact OPEN(green) and CLOSED (red) positionsas well as mechanism CHARGED(yellow) and DISCHARGED (white)positions. Manual control pushbut-tons on the breaker face shall beprovided for opening and closingthe circuit breaker.

The Power Circuit Breaker shallhave a “positive on” feature. Thecontact position flag will read“CLOSED” if the contacts havebeen welded.

Electrically operated circuit break-ers shall be complete with①[110/120Vac] [208/240Vac]

52 Breaker Specifications


July 2003

Trip Units (Digitrip)Note to Specification Writer Digitrip RMS Trip Units are avail-able as follows: Digitrip 220 - Basic Protection -(select Paragraph 1 through 5)

Digitrip 520 - Basic Protectionwith an optional local current indi-cation only, optional LCD display(select Paragragh A through H)

Digitrip 1150 - AdvancedProtection - with metering, LED dis-play and remote communicationfacility (select Paragraph I throughto BB)

Basic Trip Unit(1) Each power circuit breaker shallbe equipped with a solid-state trip-ping system consisting of three (3)current sensors, microprocessor-based trip device low energy tripactuator. Current sensors shall pro-vide operation and signal function.The trip unit shall use microproces-sor-based technology to providethe basic adjustable time-currentprotection functions. True RMSsensing circuit protection shall beachieved by analysing the sec-ondary current signals receivedfrom the circuit breaker currentsensors and initiating a trip signalto the circuit breaker trip actuatorwhen predetermined trip levels andtime delay settings are reached.Interchangeable Current sensors(with associated rating plugs) shallestablish the continuous trip ratingof each circuit breaker. The trip unitshall be Cutler-Hammer type DIG-ITRIP.

(2) The trip unit shall be providedwith a display panel, including arepresentation of the Time/Currentcurve of the trip unit, that will indi-cate the protection function set-tings. The unit shall be continuous-ly self-checking and provide a visu-al indication that the internal cir-cuitry is being monitored and isfully operational.

(3) Complete system selectivecoordination shall be provided bythe addition of the following indi-

representation of the Time/Currentcurve of the trip unit that will indi-cate the protection function set-tings. The unit shall be continuous-ly self-checking and provide a visu-al indication that the internal cir-cuitry is being monitored and isfully operational.

(D) Complete system selective co-ordination shall be provided by theaddition of the following individual-ly adjustable Time/Current curveshaping solid state elements :

a. All breakers shall have adjust-ments for long delay pick-up andtime.

b. ①[Main Incoming] [Bus Coupler][Feeders] shall have individualadjustments for short delay pick-upand time, and include I

2t settings.

c. ①[Main Incoming] [Bus Coupler][Feeders] shall have an adjustableinstantaneous pick-up.

d. When indicated on the drawingcircuit breakers shall have individu-ally adjustable earth fault currentpick-up and time and include I2tsettings or ground fault alarm only.

(E) The Trip Unit shall be providedwith a making-current release cir-cuit.

The circuit shall be armed forapproximately eight cycles afterbreaker closing and shall operatefor all fault levels above 15 times-the ampere value of the currentsensor.

(F) Trip Units shall have selectablethermal memory for enhanced cir-cuit protection.

(G) There shall be an optional dis-play. This display will show phase,neutral and ground sensors andhigh phase current. The accuracy ofthese readings shall be ± 2% of fullscale.

(H) The Trip Unit shall providezone interlocking for the short timedelay and ground fault delay tripfunctions for improved system co-ordination. The zone interlocking

vidually adjustable time/currentcurve shaping solid-state elements:


b. ①[Main] [Tie] [and Feeders] shallhave a fixed instantaneous pick-up.

(4) The trip unit shall be providedwith a making-current release cir-cuit. The circuit shall be armed forapproximately one cycle afterbreaker closing and shall operatefor all fault levels above 15 timesthe ampere RMS value of the cur-rent sensor.

(5) Trip unit shall have selectablethermal memory for enhanced cir-cuit protection.

(A) Each power circuit breaker shallbe equipped with a solid-state trip-ping system consisting of three (3)current sensors, microprocessor-based trip device and low energytrip actuator. Current sensors shallprovide operation and signal func-tion. The trip unit shall use micro-processor-based technology to pro-vide the basic adjustable time-cur-rent protection functions. True RMSsensing circuit protection shall beachieved by analysing the secondarycurrent signals received from the cir-cuit breaker current sensors and ini-tiating a trip signal to the circuitbreaker trip actuator when predeter-mined trip levels and time delay set-tings are reached. InterchangeableCurrent Sensors with its associatedRating Plug shall establish the con-tinuous trip rating of each circuitbreaker. The trip unit shall be Cutler-Hammer type DIGITRIP.

(B) The trip unit shall have an infor-mation system that provides LED’sto indicate mode of trip followingan automatic trip operation. Theindication of the mode of trip shallbe retained after an automatic trip.A reset button shall be provided toturn off the flashing LED indicationafter an automatic trip.

(C) The Trip Unit shall be providedwith a display panel, including a

53Breaker Specifications

system shall restrain the tripping ofthe upstream breaker and allow thebreaker closest to the fault to tripwith no intentional time delay. Inthe event that the downstreambreaker does not trip, the upstreambreaker shall trip after the presettime delay.

Advanced Trip Unit(I) Each power circuit breaker shallbe equipped with a solid-state trip-ping system consisting of three (3)current sensors, microprocessor-based trip device and Low energytrip actuator. Current sensors shallprovide operation and signal func-tion. The trip unit shall use micro-processor-based technology to pro-vide the basic adjustable time-cur-rent protection functions. True RMSsensing circuit protection shall beachieved by analysing the sec-ondary current signal received fromthe circuit breaker current sensorsand initiating trip signal to the cir-cuit breaker trip actuator when pre-determined trip levels and timedelay settings are reached.Interchangeable Current Sensorswith its associated Rating Plugshall establish the continuous triprating of each circuit breaker. Thetrip unit shall be Cutler-Hammertype DIGITRIP.

(J) The trip unit shall have an infor-mation system that provides LED’sto indicate mode of trip followingan automatic trip operation. Theindication of the mode of trip shallbe retained after an automatic trip.A reset button shall be provided toturn off the LED indication after anautomatic trip.

(K) The Trip Unit shall be providedwith a display panel, including arepresentation of the Time/Currentcurve of the trip unit that will indi-cate the protection function set-tings. The unit shall be continuous-ly self-checking and provide a visu-al indication that the internal cir-cuitry is being monitored and isoperational.

(L) Complete system selective co-ordination shall be provided by the

the trip unit shall maintain thecause of trip history and the modeof trip LED indication as long as itsinternal power supply is available.Internal relays are programmableto provide contacts for remote indi-cation.

(R) Metering display accuracy ofthe complete system including cur-rent sensors, auxiliary CTs and thetrip unit shall be ±1% of full scalefor current values.

(S) The Trip Unit shall include apotential transformer module, suit-able for operation up to 600V, 50/60Hz. The primary of the potentialtransformer module shall be con-nected internally to the line side ofthe circuit breaker through a dielec-tric disconnect plug.

(T) The Trip Unit shall provide zoneinterlocking for the short time delayand ground fault delay trip func-tions for improved system protec-tion. The zone interlocking systemshall restrain the tripping of theupstream breaker and allow thebreaker closest to the fault to tripwith no intentional time delay. Inthe event that the downstreambreaker does not trip, the upstreambreaker shall trip after the presettime delay.

(U) The Trip Unit shall have aninformation system that utilisesbattery backup LEDís to indicatemode of trip following an automat-ic trip operation. The indication ofthe mode of trip shall be retainedafter an automatic trip. A test push-button shall energise an LED toindicate the battery status.

(V) The Trip Unit shall be capableof monitoring the following data :

Instantaneous value of phase,neutral and ground current

Instantaneous value of line to linevoltage

Maximum and minimum currentvalues

Watts, Vars, VA, Watt-hours, and VA-hours

addition of the following individual-ly adjustable Time/Current curveshaping solid state elements :


b. ①[Main Incoming] [Bus Coupler][Feeders] shall have individualadjustments for short delay pick-upand time, and include I2t settings.

c. ➁①[Main Incoming] [BusCoupler] [Feeders] shall have anadjustable instantaneous pick-up.

d. ① When indicated on the draw-ing circuit breakers shall have indi-vidually adjustable ground faultcurrent pick-up and time andinclude I2t settings and groundfault alarm only.

(M) The Trip Unit shall be providedwith a making-current release cir-cuit. The circuit shall be armed forapproximately eight cycles afterbreaker closing and shall operatefor all fault levels above 15 times-the ampere value of the currentsensor.

(N) Trip Units shall have selectablethermal memory for enhanced cir-cuit protection to provide protec-tion against cumulative overheat-ing should a number of overloadconditions occur in quick succes-sion.

(O) An adjustable high load func-tion shall be provided to avoid nui-sance alarms.

(P) The Trip Unit shall contain anintegral test pushbutton. A keypadshall be provided to enable theuser to select the values of test cur-rents within a range of availablesettings. The protection functionsshall not be affected during testoperations. The circuit breaker maybe tested in the Trip or No Trip testmode.

(Q) The Trip Unit shall include apower/relay module which shallsupply control power to the read-out display. Following an automatictrip operation of the circuit breaker,


July 2003

54 51Breaker SpecificationsBreaker Specifications

The energy monitoring parametervalues (peak demand, presentdemand and forward and reverseenergy consumption) shall be indi-cated in the trip unitís alpha-numeric display panel.

The trip unit shall display the fol-lowing power quality values:

Crest Factor, Power Factor, percenttotal harmonic distortion and har-monic values of all phases throughto the 31st harmonic.

(W) Metering display accuracy ofthe complete system shall be ± 2%of full scale for Power and Energyvalues.

(X) The display for the AdvancedTrip Units shall be LED display

(Y) Programming may be done viaa keypad at the faceplate of theunit, download via a cable link,Triplink or via the communicationnetwork.

(Z) System coordination shall beprovided by the following micro-processor-based programmableTime/Current curve shaping adjust-ments. The short time pick-upadjustments shall be dependent onthe long delay setting.

(AA) The trip Unit shall offer a 3event trip log that will store the tripdata and shall time and date stampthe event.

(BB) The Trip Unit shall beequipped to permit communicationvia a network twisted pair forremote monitoring and control.

Note to Specification Writer - Forcentralized monitoring of theDigitrip 1150 trip units, select theBIM (Breaker Interface Module).

Programmable long time setting.

Programmable long time delaywith selectable I2t or It curve shap-ing.

Programmable curve shapes ofmoderately, very or extremelyinverse

Programmable short time setting.

Programmable short time delaywith selectable flat or I2t curveshaping and zone selective inter-locking.

Programmable instantaneous setting.

Programmable ground fault set-ting trip or earth fault setting alarm.

Programmable ground fault delaywith selectable flat or I2t curve shap-ing and zone selective interlocking.


July 200355Breaker Specifications


July 200356 Factory Configured Circuit Breakers

Factory Configured CircuitBreakers

Magnum DS Power CircuitBreakers are ordered using a 25-digit catalog numbering systemthat allows for maximum optionsand flexibility. Circuit breaker con-figuration is achieved by using asimple 2-step process.

Note: If the breaker is drawoutconstruction and a cassette isrequired, the cassette must be con-figured separately.

Step 1: Select a 10-DigitBreaker Catalog Number Prefix.

Choose the breaker prefix fromTables 3.1 or 3.2 based on the fol-lowing:

Drawout of Fixed Construction

Number of Poles

Continuous Current Rating

Magnum Frame Type

Interrupting Rating

Short Time Withstand

Phasing (Double-wides only)

Catalog Position 20 establish-es if an optional OTS/Bell AlarmSwitch and/or a Mechanical TripIndicator is installed per Table3.12.

Catalog Position 21 establish-es if an optional PadlockablePushbutton Cover is installed perTable 3.13.

Catalog Position 22 establish-es if an optional Key InterlockProvision is installed per Table3.14.

Catalog Position 23 establish-es if an optional Latch CheckSwitch is installed per Table 3.15and/or designates the voltage con-nection ifan 1150 Trip Unit is sup-plied.

Catalog Position 24 establish-es if the breaker is shipped alone orin a cassette with options perTable 3.16.

Catalog Position 25 isreserved for Cutler-Hammer useper Table 3.17.

Step 2: Select Breaker CatalogPositions 11 through 25 to des-ignate factory installed optionsas follows:

Catalog Positions 11 and 12establish the sensor and ratingplug ratings per Tables 3.3, 3.4and 3.5.

Catalog Positions 13 and 14establish the trip unit type perTable 3.6.

Catalog Position 15 establish-es if an optional Shunt Trip isinstalled per Table 3.7.

Catalog Position 16 establish-es if an optional Motor Operator isinstalled per Table 3.8.

Catalog Position 17 establish-es if an optional Spring ReleaseDevice is installed per Table 3.9.

Catalog Position 18 establish-es if an optional UndervoltageRelease or Second Shunt Trip isinstalled per Table 3.10.

Catalog Position 19 establish-es if optional Auxiliary Switchesare installed per Table 3.11.


July 200357Factory Configured Circuit Breakers

Catalog Number Character Positions1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

Character DescriptionPosition

3 Circuit Breaker Frame

4 Interrupting/Withstand Rating

5 & 6 Continuous Amperes and Phasing (Facing Front of Breaker)

7 Poles and Neutral (Facing Front of Breaker)

8 Mounting Configuration and Load Terminals

9 Nameplate Language

10 Future Use

11 & 12 Sensor and Rating Plug Rating

13 & 14 Trip Unit and Protection (and External ControlVoltage When Required)

15 Shunt Trip (ST)


16 Motor Operator for Charging Closing Spring

17 Spring Release Device (SRD)

18 Undervoltage Release (UVR) or 2nd. Shunt Trip (ST)

19 Auxiliary Switch

20 OTS/Bell Alarm Switch and/or MechanicalIndicator

21 Padlock Provisions for Close & Open Buttons

22 Operations Counter and/or Keylock Provisions

23 Latch Check Switch/Trip Unit Line VoltageConnection for 1150 Trip Unit

24 Shipping Instructions

25 Future Use

Figure 3-1 Circuit Breaker 25-character Catalog Number Selections

M D A – X

58 Factory Configured Circuit Breakers


July 2003

Table 3.1 Magnum DS Drawout Mounted Circuit Breakers – UL LIsted UL1066(First 10 Character Positions of Catalog Number)

This selection is for a drawout circuit breaker with primary disconnecting contacts (finger clusters).

ContinuousCurrent Rating

Amps at 40°C ①

80012001600

80012001600

80012001600

800

8001600

80016002000250030003200

80016002000250030003200

80016002000250030003200

40005000

400050006000

40005000

400050006000

Magnum ACBFrame Type

NarrowNarrowNarrow

NarrowNarrowNarrow

NarrowNarrowNarrow

Standard

Standard Standard

Standard Standard Standard Standard Standard Standard



Double Double

DoubleDoubleDouble

DoubleDouble

DoubleDoubleDouble

InterruptingRating (kA) at600V Inst. Trip

424242

505050

656565

42

5050

656565656565

858585858585

100100100100100100

8585

100100100

8585

100100100

Short-TimeWithstand

Rating (kA) at600V

424242

505050

656565

42

5050

656565656565

858585858585

858585858585

8585

100100100

8585

100100100

3-Pole CatalogNumber

Positions 1-10

MDN4083LEAMDN4123LEAMDN4163LEA



MDS4083WEA

MDS5083WEAMDS5163WEA

MDS6083WEAMDS6163WEA MDS6203WEAMDS6253WEA MDS6303WEAMDS6323WEA


MDSC083WEAMDSC163WEA MDSC203WEAMDSC253WEA MDSC303WEAMDSC323WEA

MDS84N3WEAMDS85N3WEA

MDSC4N3WEAMDSC5N3WEAContact C-H ➂


MDSC403WEAMDSC503WEAContact C-H ➃

3-PolePhasing ②

(Left to Right)

ABCABCABC

ABCABCABC

ABCABCABC

ABC

ABCABC

ABCABCABCABCABCABC

ABCABCABCABCABCABC

ABCABCABCABCABCABC

AABBCC ➄AABBCC ➄

AABBCC ➄AABBCC ➄AABBCC ➄

ABCABC ➅ABCABC ➅

ABCABC ➅ABCABC ➅ABCABC ➅


Positions 1-10




MDS4084WEA




MDSC084WEAMDSC164WEA MDSC204WEAMDSC254WEA MDSC304WEAMDSC324WEA

MDS84N4WEAMDS85N4WEA

MDSC4N4WEAMDSC5N4WEA

Contact C-H


MDSC404WEAMDSC504WEA

4-PolePhasing ②

(Left to Right)

NABCNABCNABC

NABCNABCNABC

NABCNABCNABC

NABC

NABCNABC

NABCNABCNABCNABCNABCNABC



NNAABBCC ➄NNAABBCC ➄

NNAABBCC ➄NNAABBCC ➄NNAABBCC ➄

NNABCABC ➅NNABCABC ➅

NNABCABC ➅NNABCABC ➅

Narrow Frame Drawout Circuit Breaker

Standard Frame Drawout Circuit Breaker

Double Frame Drawout Circuit Breaker

① Magnum air circuit breakers are 100% thermal rated (no de-rating necessary when properly applied in a specified enclosure).② Phasing Left to Right when facing front of circuit breaker - Neutral rated 100% of continuous current.➂ 6000 Amp circuit breaker for use in a forced air cooled enclosure manufactured and tested by the OEM.➃ 6000 Amp circuit breaker for use in a forced air cooled switchgear or power module manufactured by Cutler-Hammer.➄ AABBCC or NNAABBCC phasing is the type used in Cutler-Hammer Pow-R-Line C Switchboards and is the recommended phasing for use by OEMs.➅ ABCABC or NNABCABC phasing is for use in Cutler-Hammer Magnum DS Low Voltage Switchgear and Power Modules.

59Factory Configured Circuit Breakers


July 2003

Table 3.2 Magnum DS Fixed Mounted Circuit Breakers – UL LIsted UL1066(First 10 Character Positions of Catalog Number)

This selection is for a fixed circuit breaker with fixed mounting feet and horizontal terminal pads for bus connections.

ContinuousCurrent Rating

Amps at 40°C ①

80012001600

80012001600

800120016002000

800

8001600

80016002000250030003200

80016002000250030003200

80016002000250030003200

40005000

400050006000

40005000

400050006000


NarrowNarrowNarrow

NarrowNarrowNarrow

NarrowNarrowNarrowNarrow

Standard

Standard Standard




Double Double

DoubleDoubleDouble

DoubleDouble

DoubleDoubleDouble

InterruptingRating (kA) at600V Inst. Trip

424242

505050

65656565

42

5050

656565656565

858585858585

100100100100100100

8585

100100100

8585

100100100

Short-TimeWithstand

Rating (kA) at600V

424242

505050

65656565

42

5050

656565656565

858585858585

858585858585

8585

100100100

8585

100100100


Positions 1-10 ➅

MDN4083HEAMDN4123HEAMDN4163HEA


MDN6083HEAMDN6123HEAMDN6163HEAMDN6203HEA

MDS4083HEA

MDS5083HEAMDS5163HEA

MDS6083HEAMDS6163HEA MDS6203HEAMDS6253HEA MDS6303HEAMDS6323HEA


MDSC083HEAMDSC163HEA MDSC203HEAMDSC253HEA MDSC303HEAMDSC323HEA

MDS84N3HEAMDS85N3HEA

MDSC4N3HEAMDSC5N3HEAContact C-H ➂


MDSC403HEAMDSC503HEAContact C-H ➂

3-PolePhasing ②

(Left to Right)

ABCABCABC

ABCABCABC

ABCABCABCABC

ABC

ABCABC

ABCABCABCABCABCABC

ABCABCABCABCABCABC

ABCABCABCABCABCABC

AABBCC ➃AABBCC ➃

AABBCC ➃AABBCC ➃AABBCC ➃

ABCABC ➄ABCABC ➄

ABCABC ➄ABCABC ➄ABCABC ➄


Positions 1-10➅



MDN6084HEAMDN6124HEAMDN6164HEAMDN6205HEA

MDS4084HEA




MDSC084HEAMDSC164HEA MDSC204HEAMDSC254HEA MDSC304HEAMDSC324HEA

MDS84N4HEAMDS85N4HEA

MDSC4N4HEAMDSC5N4HEA

Contact C-H


MDSC404HEAMDSC504HEA

4-PolePhasing ②

(Left to Right)

NABCNABCNABC

NABCNABCNABC

NABCNABCNABCNABC

NABC

NABCNABC




NNAABBCC ➃NNAABBCC ➃

NNAABBCC ➃NNAABBCC ➃NNAABBCC ➃

NNABCABC ➄NNABCABC ➄

NNABCABC ➄NNABCABC ➄

Narrow Frame Fixed Circuit Breaker

Standard Frame Fixed Circuit Breaker

Double Frame Fixed Circuit Breaker

① Magnum air circuit breakers are 100% thermal rated (no de-rating necessary when properly applied in a specified enclosure).② Phasing Left to Right when facing front of circuit breaker - Neutral rated 100% of continuous current.➂ 6000 Amp circuit breaker for use in forced air switchgear or switchboard enclosure manufactured and tested by the OEM.➃ AABBCC or NNAABBCC phasing is the type used in Cutler-Hammer Pow-R-Line C Switchboards and is the recommended phasing for use by OEMs.➄ ABCABC or NNABCABC phasing is for use in Cutler-Hammer Magnum DS Low Voltage Switchgear and Power Modules.➅ Use a “V” in lieu of a “H” as the 8th. (eighth) character in the Catalog Number when factory installed vertical adapters are required instead of standard horizontal terminals.

60 Factory Configured Circuit Breakers


July 2003

Tables 3.3, 3.4 and 3.5 Magnum DS Factory Installed Current Sensors and Rating Plugs Option for Fixedor Drawout Circuit Breakers (Character Positions 11 and 12 of Catalog Number)Depending on the circuit breaker frame type, select current sensors and rating plugs from Tables 3.4, 3.5 or 3.6. One current sensor per phase and onerating plug are included as standard with all fixed and drawout circuit breakers unless a circuit breaker is non-automatic. Select NN for character posi-tions 11 and 12 if the circuit breaker is non-automatic (without integral trip unit protection). Select the current sensor and rating plug rating by circuitbreaker frame size. For 3-pole circuit breaker ground fault applications on 3-phase, 4-wire circuits, external neutral mounted current sensors must beordered separately.

Table 3.3 Available Current Sensors and Rating Plugs for Narrow Frame

Catalog NumberPositions 11 and 12

NN - None20161312100807060403050201 ①

2000A(Fixed CircuitBreaker Only)

20001600125012001000800630600400300250200

1600 A

1600125012001000800630600400300250200100 ①

1200 A

12001000800630600400300250200100 ①

800 A

800630600400300250200100 ①

Table 3.4 Available Current Sensors and Rating Plugs for Standard Frame


NN - None32302520161312100807060403050201 ①

3200 A

32003000250020001600125012001000800630600400300250200

3000 A

3000250020001600125012001000800630600400300250200

2500 A

250020001600125012001000800630600400300250200

2000 A

20001600125012001000800630600400300250200

1600 A

1600125012001000800630600400300250200100 ①

800 A

800630600400300250200100 ①

Table 3.5 Available Current Sensors and Rating Plugs for Double Frame


NN - None605040322520

6000 A ①

600050004000320025002000

5000 A

50004000320025002000

4000 A

4000320025002000

① Check Cutler-Hammer for availability of 100 ampere sensor

① Check Cutler-Hammer for availability of 100 ampere sensor

① Check Cutler-Hammer for future availability of sensors on frames indicated

61


July 2003

Factory Configured Circuit Breakers

Table 3.6 Factory Installed Trip Unit Option for Fixed or Drawout Circuit Breakers(Character Positions 13 and 14 of Catalog Number)


NN NN NN NN

22

525G

M2MTMUMVMGMHMMMNMEMCMF

CTCUCVCHCM CNCECCCF

1A1C1E1F1G1H1J1K1M

Digitrip RMSTrip Unit

①

Non-Automatic ➄Non-Automatic

Non-Automatic ➄Non-Automatic

220

520520

520M 520M520M 520M520M 520M 520M520M 520M520M520M

520MC 520MC 520MC 520MC 520MC 520MC520MC 520MC 520MC

115011501150115011501150115011501150

Functions

3-Pole ACB3-Pole ACB4-Pole ACB4-Pole ACB

LI

LSILSIG

LSI LSILSI LSI

LSIG LSIG LSIGLSIGLSIALSIA LSIA

LSI LSI LSI

LSIG LSIGLSIG LSIALSIALSIA

LSI LSI LSI

LSIG LSIG LSIG LSIALSIALSIA

Trip Unit Power Supply

Voltage ②

Not ApplicableNot Applicable Not ApplicableNot Applicable

Not Applicable

Not ApplicableNot Applicable

Not Applicable ➂24/48 Vdc120 Vac240 Vac

Not Applicable ➂24/48 Vdc120 Vac 240 Vac

24/48 Vdc120 Vac240 Vac

24/48 Vdc120 Vac240 Vac

24/48 Vdc120 Vac240 Vac

24/48 Vdc120 Vac240 Vac

24/48 Vdc120 Vac240 Vac

24/48 Vdc120 Vac240 Vac

24/48 Vdc120 Vac240 Vac

Available onMagnumFrame(s)

Narrow/StandardDouble

Narrow/StandardDouble

Narrow/Standard

All FramesAll Frames

All FramesAll FramesAll FramesAll FramesAll FramesAll FramesAll FramesAll FramesAll FramesAll FramesAll Frames

All FramesAll FramesAll FramesAll FramesAll FramesAll FramesAll FramesAll FramesAll Frames

Standard/DoubleStandard/DoubleStandard/DoubleStandard/DoubleStandard/DoubleStandard/DoubleStandard/DoubleStandard/DoubleStandard/Double

① Digitrip 520MC Trip Unit requires PowerNet Software version 3.2 or higher if PowerNet is used② Power Relay Module mounted integral to circuit breaker receives power from an external customer supplied source wired through thebreaker secondary contacts. The external source powers the trip unit digital display (520M, 520MC and 1150), communications functions(520MC and 1150) and relays➂ No Power Relay Module provided for 520M trip unit when this catalog code is selected. The Digital display powered from current sensorsand the circuit breaker must carry 20% rated sensor current to power up the trip unit digital display.➃ Digitrip 1150 has programmable relay trip or contact A for trip unit protective and high load functions. ➄ The maximum available instaneous interrupting rating for the Magnum DS Standard Frame Non-Automatic Switch is 85kA when thebreaker is used with a suitable external overcurrent protective device with instantaneous protection.

Power RelayModule Alarm or

Trip Contact

NoneNone NoneNone

None

NoneNone

NoneHigh Load AlarmHigh Load AlarmHigh Load Alarm

NoneGround TripGround Trip Ground Trip

Ground AlarmGround AlarmGround Alarm

High Load AlarmHigh Load AlarmHigh Load Alarm

Ground TripGround TripGround Trip

Ground AlarmGround AlarmGround Alarm

Programmable ➃Programmable ➃Programmable ➃Programmable ➃Programmable ➃Programmable ➃Programmable ➃Programmable ➃Programmable ➃

Digitrip 220 Trip Unit Digitrip 520 Trip Unit Digitrip 520M Trip Unit Digitrip 520MC Trip Unit Digitrip 1150 Trip Unit

62


July 200357Factory Configured Circuit Breakers

Table 3.7 Factory Installed Shunt Trip (ST) Optionfor Fixed or Drawout Circuit Breakers (CharacterPosition 15 of Catalog Number) ①

Catalog NumberPosition 15

NARCH

Voltage(AC: 50/60 Hz)

None110 - 127 Vac/dc208 - 250 Vac/dc

24 Vdc48 Vdc

① Refer applications requiring capacitor tripdevices to Cutler-Hammer

Table 3.8 Factory Installed Motor Operator Optionfor Fixed or Drawout Circuit Breakers (CharacterPosition 16 of Catalog Number)

For electrically operated circuit breakers, select a Motor Operator andSpring Release Device (SRD) and (if required) a Shunt Trip (ST). TheMotor Operator voltage selected must match the Spring ReleaseDevice (SRD) voltage.


MNPLKWT


Manual Operated110 - 120 Vac220 - 240 Vac

24 Vdc48 Vdc

110 - 125 Vdc220 - 250 Vdc

Table 3.9 Factory Installed Spring Release Device(SRD) Option for Fixed or Drawout Circuit Breakers(Character Position 17 of Catalog Number)


NARCH


None110 - 127 Vac/dc208 - 250 Vac/dc

24 Vdc48 Vdc

Table 3.12 Factory Installed Bell Alarm/OTS SwitchOption for Fixed or Drawout Circuit Breakers(Character Position 20 of Catalog Number)


ENY

MechanicalTrip Indicator

NoYesYes

OTS Switchwith 2 Form C Contacts

NoNoYes

This option is for circuit breakers with trip units only, not available onNon-Automatic Circuit Breakers.

Table 3.10 Factory Installed Undervoltage Release(UVR) or Second Shunt Trip Attachment (STA)Option for Fixed or Drawout Circuit Breakers(Character Position 18 of Catalog Number)


NARCHEFGXJK1234


None110 - 127 Vac208 - 240 Vac

24 Vdc48 Vdc

110 - 125 Vdc220 - 250 Vdc

32 V dc380 - 415 Vac

480 Vac600 Vac

110 - 127 Vac208 - 250 Vac

24 Vdc48 Vdc

① Refer requests for Time Delay UVRs to Cutler-Hammer. ➁ Digitrip 1150 Trip Units have an integral adjustable time delay undervoltage tripfunction from the line voltage. ➂ An external customer supplied panel mounted Time Delay Undervoltage Relay canalso be applied, wired through the breaker secondary contacts to a Shunt TripAttachment for Time Delay Undervoltage protection. ➃ Each second Shunt Trip Attachment includes its own cut-off switch.

UVRRelease Type

① ➁ ➂ ➃

NoneInstantaneousInstantaneous Instantaneous InstantaneousInstantaneous InstantaneousInstantaneous InstantaneousInstantaneous Instantaneous

Second Shunt TripSecond Shunt TripSecond Shunt TripSecond Shunt Trip

Table 3.11 Factory Installed Auxiliary SwitchOption for Fixed or Drawout Circuit Breakers(Character Position 19 of Catalog Number)


N246

Contact Type

None2a/2b4a/4b6a/6b

① Rëfer applications requiring 6a/6b contacts on the Narrow Frame Breaker to Cutler-Hammer.➁ Except when a Second Shunt Trip Attachment is selected, which occupies a 2a/2bcontact mounting position.

Comments

4a/4b maximum on Narrow Frame ①

6a/6b maximum on Double or Standard Frames ➁

63Factory Configured Circuit Breakers


July 2003

Table 3.14 Factory Installed OperationsCounter/Key Interlock Provisions Option forFixed or Drawout Circuit Breakers(Character Position 22 of Catalog Number)


NKCRAYLH

Counter Type

No CounterNo CounterNo CounterNo Counter

Operations CounterOperations CounterOperations CounterOperations Counter

① Key Interlock provision includes a hole in the front cover withcap plus provisions hardware kit for customer installation ofcustomer supplied cylinder lock.

Keylock Provision ①

No LockKirk Lock

Castell LockRonis Lock

No LockKirk Lock

Castell LockRonis Lock

Table 3.16 Circuit Breaker and CassetteShipping Instructions①

(Character Position 24 of Catalog Number)

Configure the drawout cassette and cassette options using Figure 3-2(Cassette Catalog Number Selections) and its accompanying tables.

CatalogNumber

Position 24

A

C

C

P

P

S

S

W

W

ShipmentDescription

Fixed orDrawout ACB

Alone

Drawout ACB in Narrow CassetteDrawout ACB in

Universal Cassette


Universal Cassette


Universal Cassette


Universal Cassette


All Frames

Narrow

Standard

Narrow

Standard

Narrow

Standard

Narrow

Standard

Shutters

NotApplicable

No Shutters

No Shutters

No Shutters

No Shutters

Shutters

Shutters

Shutters

Shutters

Pre-WiredCassette

SecondaryTerminalBlocks

Not Wired

Not Wired

Not Wired

Pre-Wired

Pre-Wired

Not Wired

Not Wired

Pre-Wired

Pre-Wired

Table 3.17 Future Use By Cutler-Hammer(Character Position 25 of Catalog


X

Description

Future FactoryOption

① Double-wide and Standard cassettes ship separately from breakers

Table 3.13 Factory InstalledPadlockable Pushbutton Cover Option forFixed or Drawout Circuit Breakers(Character Position 21 of Catalog Number)


NMPCH

Description

NoneMetal Frame (Open and Close)Plastic Frame (Open and Close)

Block Close PB Metal FrameBlock Close PB Plastic Frame

Table 3.15 Factory Installed Latch CheckSwitch/Metering Trip Unit ConfigurationOption for Fixed or Drawout Circuit Breakers(Character Position 23 of Catalog Number)


NMLYCD

Latch Check Switch(LCS) Connection

None (Default)None

Latch Check Switch wired to Spring ReleaseLatch Check Switch wired to Spring Release

Latch Check Switch for External Wiring (1 Form C) ①

Latch Check Switch for External Wiring (1 Form C) ①

Metering Trip Unit Line Voltage Connection(Applicable only when Digitrip RMS 1150 Trip

Unit is selected in Catalog Positions 13 and 14)

Upper Terminal Voltage ConnectionLower Terminal Voltage ConnectionUpper Terminal Voltage ConnectionLower Terminal Voltage ConnectionUpper Terminal Voltage ConnectionLower Terminal Voltage Connection

The Latch Check Switch monitors the circuit breaker trip latchand readiness to close.

① Form C contact wired through circuit breaker secondary contacts for external use.

64


July 2003

Step 2: Select Cassette CatalogPositions 8 through 15 to des-ignate factory installed optionsas follows:

Catalog Positions 8 and 9 perTable 3.19 are reserved for a futureoption.

Catalog Position 10 establish-es if optional shutters are installedper Table 3.20.

Catalog Positions 11 through13 per Table 3.21 are reserved forfuture options.

Catalog Positions 14 and 15establishe if the cassette is pre-wired per per Table 3.22.

Factory Configured DrawoutCassettes

Factory configured cassettes fordrawout Magnum DS Power CircuitBreakers are ordered using a 15-digit catalog numbering system.Cassette configuration is achievedby using a simple 2-step process.

Step 1: Select a 7-DigitCassette Catalog NumberPrefix.

Choose the cassette prefix fromTable 3.18 based on the following:

Magnum Cassette Type

Number of Poles

Magnum Breaker Frame Type

Continuous Current Rating

Magnum Frame Type

Factory Configured Drawout Cassettes

Catalog Number Character Positions1 2 3 4 5 6 7 8 9 10 11 12 13 14 15


1 Cassette Family

2 Future Use

3 & 4 Continuous Amperes

5 Poles

6 Rear Terminals

7 Arc Hood

8 Future Use


9 Future Use

10 Shutters

11 Future Use

12 Future Use

13 Future Use

14 Cassette Wiring

15 Cassette Shipping

Figure 3-2 Drawout Cassette 15-character Catalog Number Selections

N A N N N N C

Narrow Frame Cassette (Front View with circuit breaker)

Narrow Frame Cassette (Rear View)

65


July 2003Factory Configured Drawout Cassettes

Table 3.18 Cassettes for Drawout Circuit Breakers(First 7 Character Positions of Catalog Number)

Cassette standard features include an arc hood, provisions for secondary terminal blocks includ-ing wiring, and a cell rejection kit. Narrow and Universal Cassettes may be shipped with the cir-cuit breaker by specifying breaker Catalog Character Position 24.

Catalog NumberPositions

1 to 7

LN203HAMN203UAMN323UAMN403UAMN503UA

LN204HAMN204UAMN324UAMN404UAMN504UA

MN203PAMN323PAMN403PAMN503PA

MN203CAMN323CAMN403CAMN503CA

Cassette Type

NarrowUniversalUniversalUniversalUniversal

NarrowUniversalUniversalUniversalUniversal

Basic w/o Stab KitBasic w/o Stab KitBasic w/o Stab KitBasic w/o Stab Kit

Basic w/ Stab KitBasic w/ Stab KitBasic w/ Stab KitBasic w/ Stab Kit

Poles

3 pole3 pole3 pole3 pole3 pole


3 pole3 pole3 pole3 pole


MagnumCircuit Breaker

Frame Type

NarrowStandardStandardDoubleDouble

NarrowStandardStandardDoubleDouble

StandardStandardDoubleDouble

StandardStandardDoubleDouble

Continuous Current Rating (A)

at 40°C

800-1600800-20002500-3200

40005000

800-1600800-20002500-3200

40005000

800-20002500-3200

40005000

800-20002500-3200

40005000

Table 3.19 Future CassetteOption (Positions 8 and 9 ofCatalog Number)


NN

Table 3.20 Cassette Shutters Option(Character Position 10 of Catalog Number) Shutters can be factory installed or are also available as a field installation kit for customer instal-lation. For the Basic Cassette, a shutter field kit is recommended rather than factory installedshutters, since the shutter must be partially removed to assemble bus stabs in the cassette.


NSSS

SSS

Description

No ShuttersShutters InstalledShutters InstalledShutters Installed

Shutters InstalledShutters InstalledShutters Installed

Cassette Type

All TypesNarrow

Universal & BasicUniversal & Basic

NarrowUniversal Universal

Table 3.21 Future CassetteOption (Positions 11 to 12 ofCatalog Number)

Catalog NumberPositions

11 - 12

NNN

Table 3.23 Pre-wired Cassettes Option(Character Positions 14 and 15 of Catalog Number) Pre-wired cassettes include wiring and terminal blocks mounted and wired to secondary contactsready to receive the circuit breaker.

Catalog NumberPositions14 and 15

NC

WCWCWC


UnwiredPre-wired for circuit breakerPre-wired for circuit breakerPre-wired for circuit breaker

Poles

3 and 43 pole3 pole3 pole

4 pole4 pole4 pole


Frame Type

All FramesNarrow

StandardDouble

NarrowStandardDouble


at 40°C

All Ratings800-1600800-32004000-5000

800-1600800-32004000-5000

Table 3.22 Future CassetteOption (Position 13 ofCatalog Number)


XD

Door Escutcheon andGasket Kit

Not IncludedIncluded

Cassette Type

All Types

NarrowUniversal & BasicUniversal & Basic


Frame TypeAll Frames



at 40°CAll Ratings

800-1600800-32004000-5000


July 200366 Field Option Kits for Cassettes

Table 3.24 Cassette Shutter Field Option KitThis is a field installable kit for use with drawout cassettes, and is for customer installation.


Frame



Cassette Type

NarrowUniversal and BasicUniversal and Basic

NarrowUniversal Universal

Poles

3 pole3 pole3 pole

4 pole4 pole4 pole


800-1600800-32004000-5000

800-1600800-32004000-5000

Catalog Number

MDNSHTR3PMDSHTR332MDSHTR350

MDNSHTR4PMDSHTR432MDSHTR450

Table 3.25 Cassette Cell Switch Field Option KitThis is a field installable kit for use with drawout cassettes and is for customer installation. Theswitch changes position when the circuit breaker is levered to the CONNECT position. The kitincludes the switch, mounting bracket and hardware. The switch kit also includes pre-installedwiring for easy field installation to cassette cell secondary terminal blocks.

Magnum BreakerFrame and

Cassette Types

NarrowStandard & DoubleStandard &DoubleStandard & Double

Catalog Number

MD4CSNMSCELLSW1

MD4CSMD8CS

Description

4 Form C Contacts4 Form C Contacts4 Form C Contacts8 Form C Contacts

Type

Kit with Mounting BracketSwitch Only

Kit with Mounting Bracket Kit with Mounting Bracket

Table 3.26 Cassette Cell LockProvision Field Option KitThis is a field installable kit for use with dra-wout cassettes and is for customer installation.The kit includes mounting provisions for singleor multi-cylinder Kirk or Castell locks providedand fitted to the cassette by the customer.

Catalog Number

MCASSPRLMCASSPRR

Lock

Left SideRight Side

Table 3.27 Secondary Contact WiringField Option Kit

Description

Secondary Terminal Block KitSecondary Terminal Wire Kit

Secondary Terminal Wiring KitSecondary Terminal Repair Kit①

with Extraction Tool

Catalog Number

MSECBKMSECWRMKW40

MSECTOOL

Kit Contents

Ouantity 15 6-Point Terminal Blocks with LabelsQuantity 90 Wires for Connecting Secondary Blocks

Quantity 30 Wires 40 Inches Long for Fixed Circuit Breaker Quantity 2 6-Point Terminal Blocks, Quantity 2 Secondary

Disconnect Blocks, AMP Removal Tool and andMiscellaneous Wires

This is a field installable kit for use in wiring fixed circuit breakers or drawout circuitbreaker cassette secondary contacts or for adding option kits in the field. Each kit can beused to complete as many as three circuit breakers or more, depending on the numberand type of accessories required for the the circuit breaker.

① Pin Removal Tool can be purchased directly from AMP, Inc. under Part Number 3205183


July 200367Field Option Kits for Circuit Breakers

Table 3.28 Shunt Trip (ST)Field Option KitThis is a field installable kit for fixed or drawout circuit breakers. Thekit includes a shunt trip (ST), a cut-off switch and instructions. Referapplications requiring capacitor trip devices to Cutler-Hammer.

Voltage(AC:50/60Hz)

110 - 127 Vac/dc208 - 250 Vac/dc

24 Vdc48 Vdc

Catalog Number

MST1MST2MST3MST4

Table 3.29 Motor OperatorField Option Kit (For Charging Closing Spring)This is a field installable kit for fixed or drawout circuit breakers.The kit includes a motor operator assembly, which includes amotor cut-off switch, and instructions.

Voltage(AC:50/60Hz)

110 - 120 Vac220 - 250 Vac

24 Vdc48 Vdc

110 - 125 Vdc220 - 250 Vdc

Catalog Number

MMOTNMMOTPMMOTLMMOTKMMOTWMMOTT

Table 3.30 Spring Release Device (SRD)Field Option KitThis is a field installable kit for fixed or drawout circuit breakers. Thekit includes spring release device (SRD) assembly and instructions.

Voltage(AC:50/60Hz)

110 - 127 Vac/dc208 - 250 Vac/dc

24 Vdc48 Vdc

Catalog Number

MSRAMSRRMSRCMSRH

Table 3.32 Auxiliary SwitchField Option KitThis is a field installable kit for fixed or drawout circuit breakers. Note thata maximum of 6a/6b contacts apply to the Standard and Double Frames.Contact Cutler-Hammer if more than 4a/4b contacts are required on theNarrow Frame.

Switch Type

2a/2b Contacts

Catalog Number

MAUX2

Table 3.33 Undervoltage Release (UVR)Field Option KitThis is a field installable kit for fixed or drawout circuitbreakers.

Voltage(AC:50/60Hz)

110 - 127 Vac208 - 240 Vac

24 Vdc48 Vdc

110 - 125 Vdc220 - 250 Vdc

32 Vdc380 - 415 Vac

480 Vac600 Vac

Catalog Number

MUVRAMUVRRMUVRCMUVRHMUVREMUVRFMUVRGMUVRXMUVRJMUVRK

UVR ReleaseType ①

InstantaneousInstantaneousInstantaneousInstantaneousInstantaneousInstantaneousInstantaneousInstantaneousInstantaneousInstantaneous

① On applications requiring Time Delay Undervoltage Protection,refer requests for Time Delay UVRs to Cutler-Hammer..Digitrip 1150 Trip Units have an integral adjustable time delay under-voltage trip function. An external panel mounted Time Delay Undervoltage Relay can alsobe applied with a Shunt Trip Attachment for Time DelayUndervoltage protection.

Table 3.34 Trip Indicator and BellAlarm/Overcurrent Trip Switch (OTS)Field Option KitThis is a field installable kit for fixed or drawout circuit breakers. Itis a manual reset only device and is for circuit breakers with tripunits only (not available on Non-Automatic Circuit Breakers).

Contacts

None2 Form C2 Form C

Catalog Number

MDTRINDMDTRINDBA

MOTS

Table 3.35 Operations CounterField Option KitThis is a field installable kit for fixed or drawout circuitbreakers.

Kit Type

Mechanical Counter

Catalog Number

MCOUNT

Table 3.31 Latch Check Switch (LCS)Field Option KitThis is a field installable kit for fixed or drawout circuit breakers. Thekit includes a LCS assembly 1 Form C contact, plug-in wires andinstructions.

Catalog Number

MLSC1MLSC2

Description

Latch Check Switch for Wiring Internally to Spring ReleaseLatch Check Switch with 1 Form C Contact for Remote indication.

Trip Indication Description

Mechanical Pop-out Trip IndicatorBell Alarm/OTS with Mechanical Trip Indicator

Bell Alarm/OTS contact ①

① For use with breakers having mechanical pop-out trip indicator optionalready installed.


July 200368 Field Option Kits for Circuit Breakers

Table 3.36 Padlockable Pushbutton CoverField Option KitThis is a field installable kit for fixed or drawout circuitbreakers. Padlocks are not included and must be providedby customer. The cover can be configured to block thebreaker CLOSE and OPEN pushbuttons or only the CLOSEpushbutton.

Cover Type

Plastic Frame (Blocks Open and Close Buttons)

Metal Frame (Blocks Open and Close Buttons)

Catalog Number

MCOVH

MCOVC

Table 3.37 Breaker Key Lock ProvisionsField Option KitThis is a field installable kit for fixed or drawoutcircuit breakers. The kit includes mountinghardware and brackets to mount single cylinderlock for locking circuit breaker in the Openposition. The cylinder lock and key are notincluded and must be supplied by customer.

Key Type

CastellRonisKirk

Catalog Number

MBRLCKCMBRLCKRMBRLCKK

Table 3.38 Sensor/Rating PlugField Change-out KitThis is a field installable kit for changing the sensor/rating plug ratingon fixed or drawout circuit breakers. Narrow and Standard Frame kitsinclude 1 rating plug plus 3 sensors for 3-pole or 4 sensors for 4-polecircuit breakers. Double Frame kits include 1 rating plug plus 6 sensorsfor 3-pole or 8 sensors for 4-pole circuit breakers. The rating plug rat-ing and the sensor rating in the kit match. The sensor ampere ratingselected cannot exceed the circuit breaker frame and ampere rating. Note: For 3 pole breaker ground fault applications on 3 phase, 4 wirecircuits, externally mounted sensors must be ordered separately.

Magnum Frame

NarrowNarrowNarrowNarrowNarrowNarrowNarrowNarrowNarrowNarrowNarrowNarrowNarrow

StandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandard

DoubleDoubleDoubleDoubleDoubleDouble

Sensor Rating (A)

100 ①

20025030040060063080010001200125016002000 ➁

100 ①

20025030040060063080010001200125016002000250030003200

200025003000320040005000

3-Pole Catalog Number

M3NRG0100M3NRG0200M3NRG0250M3NRG0300M3NRG0400M3NRG0600M3NRG0630M3NRG0800M3NRG1000M3NRG1200M3NRG1250M3NRG1600M3NRG2000

M3SRG0100M3SRG0200M3SRG0250M3SRG0300M3SRG0400M3SRG0600M3SRG0630M3SRG0800M3SRG1000M3SRG1200M3SRG1250M3SRG1600M3SRG2000M3SRG2500M3SRG3000M3SRG3200

M3RRG2000M3RRG2500M3RRG3000M3RRG3200M3RRG4000M3RRG5000

4-Pole Catalog Number

M4NRG0100M4NRG0200M4NRG0250M4NRG0300M4NRG0400M4NRG0600M4NRG0630M4NRG0800M4NRG1000M4NRG1200M4NRG1250M4NRG1600M4NRG2000

M4SRG0100M4SRG0200M4SRG0250M4SRG0300M4SRG0400M4SRG0600M4SRG0630M4SRG0800M4SRG1000M4SRG1200M4SRG1250M4SRG1600M4SRG2000M4SRG2500M4SRG3000M4SRG3200

M4RRG2000M4RRG2500M4RRG3000M4RRG3200M4SRG4000M4SRG5000

① Subject to future availability. Contact Cutler-Hammer.➁ Fixed Narrow Frame Breaker only

Table 3.39 Neutral Current Sensor

This is a field installable external accessory for use with fixedor drawout circuit breakers. The fourth sensor is for mount-ing on enclosure neutral in 3-pole circuit breaker ground faultapplications on 3-phse, 4-wire systems.

Magnum Frame

Narrow or StandardNarrow or StandardNarrow or StandardNarrow or StandardNarrow or StandardNarrow or StandardNarrow or StandardNarrow or StandardNarrow or StandardNarrow or StandardNarrow or StandardNarrow or StandardNarrow or StandardNarrow or StandardNarrow or StandardNarrow or Standard

DoubleDouble

Sensor Rating

1002002503004006006308001000120012501600200025003000320040005000

Sensor Qty.Required per

3-Pole Breaker

111111111111111122

Catalog Number

Contact C-H9253C03H019253C03H029253C03H039253C03H049253C03H059253C03H149253C03H069253C03H079253C03H089253C03H159253C03H099253C03H109253C03H119253C03H129253C03H139253C03H109253C03H11

Use with Customer Supplied Lock & Key #

Castell # FGCL4008Ronis # 1104A

Kirk Lock # KC40---10 & Lock KC4


July 200369Field Option Kits for Circuit Breakers

Table 3.40 Primary Terminal Adapter Field Option Kits for Fixed Circuit BreakersThis field installation kit is for changing fixed circuit breakers to the desired bus configurations.

Terminal AdapterKit Type

VerticalVerticalVerticalVerticalVerticalVertical

VerticalVerticalVerticalVerticalVerticalVertical

Front MountFrontFrontFrontFrontFrontFront

FrontFront

Front MountFront MountFront MountFront MountFront Mount

Fixed Magnum

Frame Type

NarrowStandardStandardStandardDouble Double

NarrowStandardStandardStandardDouble Double

NarrowNarrow

StandardStandardStandardDouble Double

NarrowNarrow

StandardStandardDouble DoubleDouble

BreakerPoles

3 pole3 pole3 pole3 pole3 pole3 pole

4 pole4 pole4 pole4 pole4 pole4 pole

3 pole3 pole3 pole3 pole3 pole3 pole3 pole

4 pole4 pole4 pole4 pole4 pole4 pole3 pole

ContinuousCurrent

(A)

800 - 2000800 - 1600Up to 20002500 - 3200

40005000

800 - 2000800 - 1600Up to 20002500 - 3200

40005000

800 - 12001600 - 2000800 - 12001600 - 2500

320040005000

800 - 12001600 - 2000800 - 12001600 - 2500

320040005000

Short CircuitRating

(kA)

Up to 65Up to 65Up to 100

AllAllAll

Up to 65Up to 65Up to 100

AllAllAll

Up to 65Up to 65Up to 100Up to 100

AllAllAll

Up to 65Up to 65Up to 100Up to 100

AllAllAll

Catalog Number

MVADP320NMVADP16MVADP20MVADP32MVADP40MVADP50

MVADP420NMVADP416MVADP420MVADP432MVADP440MVADP450

NFC312KTNFC320KTSFNTC312SFNTC325SFNTC332

Contact C-HContact C-H

NFC412KTNFC420KTSFNTC412SFNTC425SFNTC432

Contact C-HContact C-H

Table 3.41 Primary Terminal Adapter Field Option Kits for Drawout Circuit CassettesThis field installation kit is for changing drawout cassettes to the desired bus configurations.

Terminal AdapterKit Type

Vertical

Vertical

L-BusL-Bus

L-Bus (with Heat Sinks)Heat Sink Kit (No Bus)

L-Bus

L-BusL-Bus

L-Bus (with Heat Sinks)Heat Sink Kit (No Bus)

L-Bus

Vertical Bus StabVertical Bus StabVertical Bus StabVertical Bus Stab

DrawoutMagnum

Frame Type

Narrow

Narrow

StandardStandardStandardStandard Double

StandardStandardStandardStandardDouble

StandardStandardDouble Double

DrawoutCassette

Type

Narrow

Narrow

UniversalUniversalUniversalUniversalUniversal

UniversalUniversalUniversalUniversalUniversal

BasicBasicBasicBasic

BreakerPoles

3 pole

4 pole




ContinuousCurrent

(A)

800 - 1600

800 - 1600

800 - 20002500 - 3000

32003200

4000 - 5000

800 - 20002500 - 3000

320032004000

800 - 20002500 - 3200

40005000

Catalog Number

MVADP320N

MVADP420N

MUBADP316MUBADP330MUBADP332MUBHS332

MUBADP330

MUBADP416MUBADP430MUBADP432MUBHS432

MUBADP430

Contact C-HContact C-HContact C-HContact C-H

Kit Qty.Required Per

Cassette

1

1

11112

11112

1111


July 200370 Field Option Kits for Circuit Breakers

Table 3.42 Mechanical Interlock Assembly KitsThis is an external field installation kit for fixed or drawout circuit breakers. Select a MechanicalInterlock Kit and Rod or Cable Kits (Table 3.43) for complete assembly as indicated.

Configuration of Interlocked

Breakers

2 Way2 Way3 Way3 Way3 Way

2 Way2 Way3 Way3 Way3 Way

Type of Breaker

FixedFixedFixedFixedFixed

DrawoutDrawoutDrawoutDrawoutDrawout

Interlock KitType

Rod Type 2Cable Type 2Cable Type 31Cable Type 32Cable Type 33

Rod Type 2Cable Type 2Cable Type 31Cable Type 32Cable Type 33

Catalog Numberof Kit

MI2FRMI2FCMI31FCMI32FCMI33FC

MI2DRMI2DCMI31DCMI32DCMI33DC

Comments

Kit also requires 1 Rod KitKit also requires 1 Cable KitKit also requires 2 Cable KitsKit also requires 3 Cable KitsKit also requires 3 Cable Kits

Kit also requires 1 Rod KitKit also requires 1 Cable KitKit also requires 2 Cable KitsKit also requires 3 Cable KitsKit also requires 3 Cable Kits

Table 3.43 Rod or Cable KitsThis is an external field installation kit for fixed or drawout circuitbreakers. It is required for the assembly of Mechanical InterlockAssembly Kits (Table 3.42)

Kit Type

Rod TypeCable TypeCable TypeCable TypeCable Type

Catalog Numberof Kit

MIRMIC5MIC6MIC8MIC10

Comments

Includes 2 Rods 3 feet long (910 mm) eachIncludes 2 Cables 5 feet long (1520 mm) eachIncludes 2 Cables 6 feet long (1830 mm) eachIncludes 2 Cables 8 feet long (2440 mm) eachIncludes 2 Cables 10 feet long (3050 mm) each Cassette-Mounted 2-Way Cable

Interlock


July 200371Miscellaneous Accessories

Table 3.44 Miscellaneous Accessories

Description

Levering DeviceLifting Yoke (3-pole Narrow Frame)

Lifting Yoke (3-pole Standard Frame)Lifting Yoke (3-pole Double Frame)Lifting Yoke (4-pole Narrow Frame)

Lifting Yoke (4-pole Standard Frame)Lifting Yoke (4-pole Double Frame)

Roll on Floor Lifting DeviceMagnum Test Cabinet

Magnum Trip Unit TesterAuxiliary Power Module

Secondary Injection Adapter CableTriplink Cable

Door Escutcheon and Gasket KitDoor Cut-out CoverIP54 Door Cover Kit

Cassette Rejection Bracket KitCapacitor Unit for Breaker Capacitor Trip

CT Shorting and Jumper Terminal Block KitCT Jumper Block KitCT Shorting Block Kit

MODBUS Mint TranslatorDigital Relay Accessory Module

Catalog Number

None Required8651C91G098651C91G028651C91G058651C91G108651C91G078651C91G086727D63H20Contact C-H

MTST1PRTAAPMMTADPTC

5720B59G01

MDESMDCC

MDESCMCELLREJBKContact C-H

MSJBMJBMSB

MMINTDRAM

Kit Contents/Accessory Function

Special levering device not required. Use 10 mm socket and drive setFits 3-pole Narrow Frame Circuit Breaker

Fits 3-pole Standard Frame Circuit BreakerFits 3-pole Double Frame Circuit Breaker Fits 4-pole Narrow Frame Circuit Breaker

Fits 4-pole Standard Frame Circuit BreakerFits 4-pole Double Frame Circuit Breaker

Lifts breaker fitted with lofting yoke from aboveFor testing electrical operation of circuit breaker

Hand-Held Tester fpr Digitrip 220, 520, 520M and 520MC Trip UnitsProvides 32 Vdc auxiliary power to Digitrip 520M, 520MC and 1150 Trip Units

Adapter cable to test Magnum trip unit with DS-II test kitDownloads Trip Unit Settings from one Digitrip RMS 1150 Trip Unit to another

Escutcheon, Gasket and Mounting HardwareCovers door cavity for future breaker compartments

IP54 Cover, Gasket and Mounting HardwareCircuit Breaker Cell Rejection Bracket Kit (Cassette Mounting)

Enclosure Mounted AC Capacitor Unit for circuit breaker Capacitor TripOne CT jumper block and one CT shorting block with mounting hardware

One CT jumper block with mounting hardwareOne CT shorting block with mounting hardware

Translates INCOM for up to 32 Communicating Trip Units to ModbusUsed with Accessory Bus on Digitrip 1150 Trip Unit

Breaker Maintenance and Handling

Breaker Trip Unit Test Devices and Accessories

Miscellaneous Breaker and Enclosure Accessories

Peripheral Devices


July 200372 Appendix

Engineering Data Reference Chart

Sections

Breaker Instruction Book

Trip Unit IL

Breaker Accessoryand Field Option Kit

Cassette Accessoryand Field Option Kit

Miscellaneous Accessories

Renewal Parts Kit

Reference #

2C12060H052C13060H03

70C1036H0370C1037H0470C1080H02

2C14766H012C14761H012C14762H012C14760H012C13769H022C13769H012C12769H012C12769H022C12865H012A11851H102C12895H012C13761H012C13763H012C13760H012C13766H012C13795H032C13820H012C14763H012C14764H012C14765H012C12894H012C14767H012C13764H01

2C12093H012C12093H022C13768H012C13765H012C13860H012C14691H012C14694H012C14694H022C14696H01

2C12766H012C12767H012C12768H012C12860H012C12861H012C12862H012C12863H012C12864H012C13790H012C14695H012C12896H012C12896H022C12898H01

2C12760H012C12761H012C12762H012C12763H012C12764H012C12866H012C12867H012C13762H012C12061H022C12897H012C12899H012C13767H012C15860H01

Product Description

Magnum DS Fixed/Drawout Power Circuit Breakers (ANSI)Magnum Fixed/Drawout Power Circuit Breakers (IEC)

Digitrip Models 1150 & 1150i Trip Units (includes 1150P)Digitrip Models 220, 220+, 520, 520i, 520Mi, 520MC & 520MCi Trip UnitsGround Fault Alarm Power Supply

Breaker Auxiliary Switch Field Option KitBreaker Spring Release Field Option KitBreaker Shunt Trip Field Option KitBreaker Undervoltage Release Field Option KitBreaker Motor Operator Field Option Kit (For Narrow, Standard & Double Frame)Breaker Motor Operator Field Option Kit (For Standard & Double Frame Only)Latch Check Switch for use with Spring Release Field Option KitLatch Check Switch (accessible) Field Option KitCharging Handle Replacement KitCenter Pull Handle Replacement Parts KitPushbutton Cover Field Option KitBreaker Kirk Key Interlock Provision Field Option KitBreaker Castell Key Interlock Provision Field Option KitBreaker Ronis Key Interlock Provision Field Option KitBreaker Pop-out Trip Indicator with Switches Field Option KitFixed Breaker Secondary Terminal Mounting Bracket Field Option KitFront Mounted Standard Terminal Field Option Kit800-1600A Vertical Adapter Field Option Kit2000A Vertical Adapter Field Option Kit3000-3200A Vertical Adapter Field Option KitDoor Escutcheon with Gasket Field Option KitBreaker Operations Counter Field Option KitNon-Auto Breaker Trip Unit Cover Field Option Kit

3 Pole ANSI Cassette Shutters Field Option Kit4 Pole ANSI Cassette Shutters Field Option KitIEC 800-3200A Cassette Shutters Field Option KitIEC 4000-6300A Cassette Shutters Field Option KitCassette Universal Bus Adapter Field Option KitCassette Key Interlock Provision Field Option KitANSI Cassette Cell Switch Field Option KitIEC Cassette Cell Switch Field Option KitCassette CT Shorting & Jumper Block Field Option Kit

Fixed Breaker 2-Way Cable Interlock Field Option KitFixed Breaker 2-Way Rod Interlock Field Option KitDrawout Breaker 2-Way Rod Interlock Field Option KitDrawout Breaker 2-Way Cable Interlock Field Option KitDrawout Breaker MI31 3-Way Cable Interlock Field Option KitFixed Breaker MI31 3-Way Cable Interlock Field Option KitDrawout Breaker MI32 3-Way Cable Interlock Field Option KitFixed Breaker MI32 3-Way Cable Interlock Field Option KitSecondary Wiring Kit to 6 Point Termination Block Field Option Kit6 Point Terminal Block Field Option KitDrawout Breaker 1100V Arc Hood Barrier Field Option KitFixed Breaker 1100V Arc Hood Barrier Field Option KitFixed Breaker Arc Hood Barrier Field Option Kit

Breaker Stationary Contact Replacement KitBreaker Moving Contact Replacement KitBreaker Secondary Disconnect Block Replacement KitBreaker Terminal Block Replacement KitBreaker Accessory Tray Replacement KitLevering Mechanism Assembly Replacement Kit Levering Door Mechanism Assembly Replacement Kit Breaker Current Sensor & Rating Plug Replacement KitHatchet Assembly Replacement Parts KitDrawout 2500-3200A Breaker Vertical Adapter Replacement KitDrawout Breaker Standard/Double Frame Rejection Bracket Replacement KitCassette Standard/Double Frame Rejection Bracket Replacement KitDrawout Breaker Narrow Frame Rejection Bracket Replacement Kit

For Use with or Installation of

Installation, Operation and MaintenaceInstallation, Operation and Maintenace

2A11799G40 - G442A11799G01 - G337802C83G01/G02

2A117962A117922A117912A117932A11794G41 - G462A11794G22 - G352C13797G012C13797G022A108922A118512C128902C12891G012C12891G022C12891G031B934912C137942A108202A11795G01, G11 & G412A11795G02, G12 & G422A11795G48, G49, G53, G54, G56 G582C128932A108902A11797

2C129982C129981B930961B930982A106701B930911B930902C137931B93094

2A11857G02, 2A11858G012A11856G02, 2A11859G022A11856G01, 2A11859G012A11857G01, 2A118582A11857G03/G07, 2A118582A11857G04/G08, 2A118582A11857G05, 2A118582A11857G06, 2A118581B930931B930922A10800G022A10800G122C12898

2A108962C127612A108992A108542A108912A108552A108942A117982A118552A11795G48-49 & G53-542A11893G01, G021B92695G01, G02 & G512A11893G92-G94

73Appendix


July 2003

74 Appendix


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75Appendix


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76 Appendix


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77Appendix


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79Appendix


July 2003

80 Appendix


July 2003

81Appendix


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82 Appendix


July 2003

83Appendix


July 2003

84 Appendix


July 2003

85Appendix


July 2003

86 Appendix


July 2003

Connection Diagram Digitrip 220/520/520i/520M/520Mi/520MC/520MCi (100-3200A)

87Appendix


July 2003

Connection Diagram Digitrip 520/520i/520M/520Mi/520MC/520MCi (5000A ABCABC Phasing)

88 Appendix


July 2003

Connection Diagram Digitrip 520/520i/520M/520Mi/520MC/520MCi (5000A AABBCC Phasing)

89Appendix


July 2003

Connection Diagram Digitrip 1150, 1150i (100-3200A)

16.

JUM

PERI

NG B

-3 (N

POW

) TO

B-7

TERM

INAL

WIL

L EL

IMIN

ATE

RE

VERS

E PO

WER

CON

DITI

ON.

SEE

NOTE

16

90 Appendix


July 2003

Connection Diagram Digitrip 1150/1150i (5000A ABCABC Phasing)

15.

JUM

PERI

NG B

-3 (N

POW

) TO

B-7

TERM

INAL

WIL

L EL

IMIN

ATE

RE

VERS

E PO

WER

CON

DITI

ON.

SEE

NOTE

15

91Appendix


July 2003

Connection Diagram Digitrip 1150/1150i (5000A AABBCC Phasing)

15.

JUM

PERI

NG B

-3 (N

POW

) TO

B-7

TERM

INAL

WIL

L EL

IMIN

ATE

RE

VERS

E PO

WER

CON

DITI

ON.

SEE

NOTE

15

92 Appendix


July 2003

Narrow Frame Cassette Overall Dimensions (3 and 4 pole, 800-2000A)

93Appendix


July 2003

Standard Frame Universal Cassette Overall Dimensions (3 and 4 pole, 800-3200A)

94 Appendix


July 2003

Double Wide Frame Universal Cassette Overall Dimensions (6 and 8 pole, 4000-5000A)

95Appendix


July 2003

Standard Frame Basic Cassette Overall Dimensions (3 pole, 800-3200A)

96 Appendix


July 2003

Double Wide Frame Basic Cassette Overall Dimensions (3 pole, 4000-5000A)

97Appendix


July 2003

Narrow Frame Fixed Overall Dimensions (3 and 4 pole, 800-2000A)

98 Appendix


July 2003

Standard Frame Fixed Overall Dimensions (3 and 4 pole, 800-1600A)

99Appendix


July 2003

Standard Frame Fixed Overall Dimensions (3 and 4 pole, 2000A)

100 Appendix


July 2003

Standard Frame Fixed Overall Dimensions (3 and 4 pole, 3200A)

101Appendix


July 2003

Double Wide Frame Fixed Overall Dimensions (3 and 4 pole, 4000-6300A)


July 2003

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July 2003

Mater Pact

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