MASTERPACT NT - hallson.co.uk · 1 Masterpact NT Discovering Masterpact 2 Using Masterpact 8...

MASTERPACT NTLow Voltage Products

User manual

We do more with electricity.

E600

55A

Masterpact NT1

Discovering Masterpact 2Using Masterpact 8Understanding the controls and indications 8Charging the circuit breaker 9Closing the circuit breaker 10Opening the circuit breaker 11Resetting after a fault trip 12Locking the controls 13

Using the Masterpact drawout chassis 16Identifying the circuit breaker positions 16Racking 17Matching a Masterpact circuit breaker with its chassis 20Locking the switchboard door 21Locking the circuit breaker in position 22Locking the safety shutters 25

Identifying the electrical auxiliaries 26Identification of the connection terminals 26Operation 27Electrical diagrams 28

Discovering Masterpact's accessories 30Micrologic control units 30Indication contacts 31Auxiliaries for remote operation 33Device mechanical accessories 36Chassis accessories 38

Inspecting and testing before use 40Initial tests 40What to do when the circuit breaker trips 41

Maintaining Masterpact performance 42Recommended maintenance program 42Maintenance operations 43Ordering replacement parts 44Troubleshooting and solutions 46

Checking Masterpact operating conditions 48

User manual forMasterpact NT circuit breakers

Masterpact NT Schneider Electric2

Discovering Masterpact

Rating plate

Rated current (x 100 A)

Suitability for isolation

Performance level

Rated insulation level

Rated short-time withstand current

Rated operational voltage

Icu - ultimate breaking capacity

Impulse withstand voltage

Ics - rated service breaking capacity

Type of device:circuit breaker or switch-disconnector

Frequency

Standards

E51

299A

E60

055A



Masterpact circuit breakers are available in drawout and fixed versions.The drawout version is mounted on a chassis and the fixed version is installedusing fixing brackets.

Drawout version

Fixed version

E51

321A

E51

322A

RESET

RESET


Chassis

E60

056A

Carrying grip

Drawout grip

Carriage switch terminals

Terminals for control-unit and fault-tripindication contacts

Door interlock

Arc-chute cover

Disconnecting-contact cluster

Auxiliary terminal shield

Mismatch protection

Control auxiliary terminals

ON/OFF indication contact terminals

Carriage switch terminals

Safety shutters

Shutter locking blocks

"Connected", "test" or "disconnected"position indicator

Locking by keylocks

Crank storage

Crank socket

Position release button

Racking interlock

Locking by padlocks

Crank


Drawout circuit breaker / switch-disconnector

E60

057A

MCH gear motor forelectrical charging of theoperating mechanism

Operating-mechanismcharging handle

PF "ready to close" contact

SDE/2 "fault-trip" indication contactor Res electrical remote reset

Terminals for control unit, faultindication contacts, controlauxiliaries and auxiliary contacts

MX/2 opening release or MNundervoltage release

XF closing release

MX/1 opening release

Closing pushbutton

Operation counter

Carrying grip

SDE/1 "fault-trip" indication contact

Arc chute

BPFE electrical closing pushbutton

Control unit

OF "ON/OFF" indication contacts


Opening pushbutton

Keylock for locking in open position

Padlock for lockingin open position

Side plate fordrawout device



E60

058A

MCH gear motor forelectrical charging of theoperating mechanism

Operating-mechanismcharging handle

PF "ready to close" contact

SDE/2 "fault-trip" indication contactor Res electrical remote reset

Terminals for control unit and faultindication contacts

MX/2 opening release or MN undervoltagerelease

XF closing release

MX/1 opening release

Closing pushbutton

Operation counter

Carrying grip

SDE/1 "fault-trip" indication contact

Control unit

OF "ON/OFF" indication contacts

Opening pushbutton

Side plate for fixeddevice

Auxiliary contact terminals

Control auxiliary terminals

Arc chute



Keylock for lockingin open position

Padlock for lockingin open position

Fixed circuit breaker / switch-disconnector

E60

059A

RESET

Indicator for position of themain contacts

"Springs charged" and "Readyto close" indicator

Locking by padlock, lead-seal coveror screws for pushbuttons

Rating plate

Trip indication button usedto reset before closing

Front


Understanding the controls andindications

Circuit breaker open anddischarged

Circuit breaker closed anddischarged

Circuit breaker open,charged and not "readyto close"

Circuit breaker closed andcharged

Circuit breaker open,charged and "ready toclose"

E51

344A

Push OFFOI

Push ON

Push OFFOI

Push ON

Push OFFOI

Push ON

Push OFFOI

Push ON

E51

488A

E51

489A

E51

490A

E51

491A

E51

492A

Push OFFOI

Push ON

Using Masterpact


The charge status is indicated as follows. The springs in the circuit breaker operating mechanism must be charged to storethe energy required to close the main contacts. The springs may be chargedmanually using the charging handle or automatically by the optional MCH gearmotor.

Manual charging.Pull the handle down sixtimes until you hear a"clack".

Automatic charging.If the MCH gear motor isinstalled, the spring isautomatically rechargedafter each closing.

MERLIN GERI

N

E60

072A

E51

347A

E46

790A

Charging the circuit breaker

Push OFFOI

Push ON

or


Using Masterpact Closing the circuit breaker

Locally (electrical)

Closing conditionsClosing (i.e. turning the circuit ON) is possible only if the circuit breaker is"ready to close".The prerequisites are the following:c device open (OFF)c springs chargedc no opening order present.

The circuit breaker will not close unless it is "ready to close" when the orderis given.

Closing the circuit breaker

Locally (mechanical)Press the mechanical ON pushbutton.

Remotely

Anti-pumping functionThe purpose of the mechanical anti-pumping function is to ensure that a circuitbreaker receiving simultaneous opening and closing orders does not open andclose indefinitely.If there is a continuous closing order, after opening the circuit breaker remainsopen until the closing order is discontinued. A new closing order is required to closethe circuit breaker. A new order is not required if the closing release is wired inseries with the PF "ready to close" contact.

Press the electrical closingpushbutton. By adding anXF closing release, thecircuit breaker can be closedlocally.

BPFE XF

When connected to a remote control panel, the XFclosing release can be used to close the circuitbreaker remotely.

XF

Push OFFO

Pu

E51

291A

E51

292A

E60

047A

E51

493A

E60

049A

E60

048A

E51

294A

E51

294A

Device not "ready to close"

Device "ready to close"


Opening the circuit breaker

LocallyPress the OFF pushbutton.

RemotelyUse one of the following solutions:c one or two MX opening releases (MX1 and MX2)c one MN undervoltage releasec one MN undervoltage release with a delay unit.

When connected to a remote control panel, these releases can be used to openthe circuit breaker remotely.

E60

047A

E60

048A

E51

294A

E51

296A

E51

499A

3 6

MNUVR

1012

100/130 V

AC/DC

S

0.5 1

3 1.5

Retardateur de MN

Time delay for UVR

4 5 6

1 2 3

1 2 3

IPush ON

Push

MX1, MX2, MN Delay unit


Using Masterpact

The circuit breaker signals a fault trip by:c a mechanical indicator on the frontc one or two SDE "fault-trip" indication contacts (SDE/2 is optional).

LocallyIf the circuit breaker is not equipped with the automatic reset option, reset itmanually.

Resetting after a fault trip

RemotelyUse the Res electrical remote reset option (not compatible with an SDE/2).

E60

047A

E51

349A

E60

048A

E60

050A

RESET


Locking the controlsDisabling circuit-breaker localclosing and opening

Pushbutton locking using a padlock(shackle diameter 5 to 8 mm), a lead seal or screws.

E60

013A

UnlockingRemove the padlock,lead seal or screws.

E60

014A

E60

015A

E60

017A

E60

018A

Padlock. Lead seal.

LockingClose the covers. Insert the padlock

shackle, lead seal orscrews.

E60

018A

E60

019A

E60

020A

Lift the covers and swingthem down.

The pushbuttons are nolonger locked.

discharged

O OFF

Opush OFF

Ipush ON

Push OFF

OPush ON

I

Push OFF

OPush ON

IE

6001

6A

Screws.


Using Masterpact Locking the controlsDisabling local and remote closing

E51

499A

CheckThe closing control isinoperative.

UnlockingRemove the padlock.

E51

350A

E51

362A

E51

446A

E51

447A

IPush ON

Push

Combination of locking systemsTo disable local and remote circuit-breaker closing, use as needed one to threepadlocks or a keylock.

Install one to three padlocks(maximum shackle diameter 5 to 8 mm)

LockingOpen the circuit breaker. Pull out the tab. Insert the padlock

shackle.


CheckThe closing control isinoperative.

E51

446A

UnlockingInsert the key.

Three types of keylocks are available

E51

271A

E60

008A

E60

009A

E60

010A

E51

269A

Turn the key. The key cannot beremoved.

RONIS PROFALUX CASTELL

Locking the controls with a keylock

LockingOpen the circuit breaker.

E51

499A

E51

448A

E51

449A

Turn the key. Remove the key.

IPush ON

Push

E51

270A


Using the Masterpactdrawout chassis

Identifying the circuit breakerpositions

c "connected" position

E51

451A

The indicator on the front signals the position of the circuit breaker in the chassis.

E51

453A

c "test" position

E51

454A

E51

314A

c "disconnected" position

E51

455A

E60

073A

Test

Test

10.9 mm

Test

32.2 mm

E60

074A


Racking

PrerequisitesTo connect and disconnect Masterpact, the crank must be used. The lockingsystems, padlocks and the racking interlock all inhibit use of the crank.

Withdrawing the circuit breaker from the "connected" to"test" position, then to "disconnected" position

The circuit breaker is in "connected" position. The circuit breaker is in"test" position.

E51

457A

The circuit breaker is in "test" position.Remove the crank or continue to"disconnected" position.

The circuit breaker is in"disconnected" position.

Test Test

TestTest

2

1

4

3

5

6

These operations require that allchassis-locking functions be disabled(see page 22).



Racking

Position the circuit breaker on the rails.Check that it rests on all four supports.

E51

460A

Open the circuit breaker(in any case, it opensautomatically duringconnection).

E51

499A

Push the circuit breaker into the chassis, taking care not to push on the control unit.

For complete information on Masterpacthandling and mounting, see the installationmanual(s).

Before mounting the circuit breaker, makesure it matches the chassis.

MERLIN GERIN

Inserting Masterpact

If you cannot insert the circuit breaker inthe chassis, check that the mismatchprotection on the chassis corresponds tothat on the circuit breaker.

Opush OFF

Ipush ON

discharged

O OFF

E60

034A

E51

461A

Removing the rails

Press the release tabsand pull the rails out.

Press the release tabs to pushthe rails in.

E51

459A

E51

458A

1

2

3

Opush OFF

Ipush ON

discharged

O OFF

E60

033A

Opush OFF

Ipush ON

discharged

O OFF

IPush ON

Push


E51

462A

Racking the circuit breaker from the "disconnected" to "test"position, then to "connected" position

The device is in "disconnected" position. The device is in "test"position.

Test Test

TestTest

4

3

5

6

2

1

The device is in "test" position.Remove the crank or continue to"connected" position.

The device is in"connected" position.



Matching a Masterpact circuitbreaker with its chassis

To set up a mismatch-preventioncombination for the circuit breaker and thechassis, see the mismatch-preventioninstallation manual.

E60

052A

The mismatch protection ensures that a circuit breaker is installed only in a chassiswith compatible characteristics.

The possible combinations are listed below.

1

2

4

3

5

AB

C

DE

A B CA B DA B EA BA C DA C EA CA D EA DA E

B C DB C EB CB D EB DB EC D EC DC ED E

4 53 53 43 4 52 52 42 4 52 32 3 52 3 4

1 51 41 4 51 31 3 51 3 41 21 2 51 2 41 2 3


Locking the switchboard door

Disabling door opening

Close the door.

E51

468A

Enabling door opening

Put the Masterpact in"disconnected" position.

E51

469A

The door is unlocked.

The locking device is installed on the left or right-hand side of the chassis.c when the circuit breaker is in "connected" or "test" position, the latch is loweredand the door is lockedc when the circuit breaker is in "disconnected" position, the latch is raised and thedoor is unlocked.

E51

464A

E51

465A

E51

466A

E51

467A

Put the Masterpact in"test" or "connected"position.

The door is locked.

discharged

O OFF

Opush OFF

Ipush ON

Opush OFF

discharged

O OFF

Opush OFF

Ipush ON

O OFF



Locking the circuit breaker inposition

Circuit breaker in "disconnected"position.

E60

022A

Pull out the tab.E

5147

1A

E51

470A

Insert the shackle(max. diameter 5 to 8 mm)of the padlock(s).

E51

475A

E51

472A

Padlocks and keylocks may be usedtogether.

Unlocking

Release the tab.

The crank can be inserted.

The crank cannot be inserted.

E51

473A

E51

474A

Test

1 2

3

1 2

3 4

Combination of locking systemsTo disable connection of the circuit breaker in "disconnected" position in thechassis, use as needed:c one to three padlocksc one or two keylocksc a combination of the two locking systems.

Disabling connection when the circuit breaker is in"disconnected" position, using one to three padlocks(maximum shackle diameter 5 to 8 mm)

Locking

Remove the padlock(s).

If specified when ordering the chassis, thislocking function may be adapted to operatein all positions ("connected", "test" and"disconnected"), instead of in"disconnected" position alone.


1 3

Unlocking

Three types of keylocks are available

E51

478A

The crank can beinserted.

Insert the key(s).

E51

479A

E51

487A

Turn the key(s).

E51

270A

RONIS

E51

269A

PROFALUX

E51

271A

CASTELL

2

Padlocks and keylocks may be usedtogether.

Remove the key(s). The crank cannot be inserted.

E51

477A

E60

023A

33 44

Locking the circuit breaker inposition

Disabling connection when the circuit breaker is in"disconnected" position, using one or two keylocks.

Locking

E60

053A

Circuit breaker in"disconnected" position.

E51

476A

Turn the key(s).

Test

1 22



E51

496A

Locking the circuit breaker when the door is open

When the door is open, the crank cannotbe inserted.

E60

024A

When the door is closed, the crankcan be inserted.

E51

495A

discharged

O OFF

Opush OFF

Ipush ON

discharged

O OFF

Opush OFF

Ipush ON


Locking the safety shuttersPadlocking inside the chassis

Four locking possibilities: using one or two padlocks(maximum shackle diameter 5 to 8 mm) for each shutter

E60

025A

E60

026A

Top and bottom shutters notlocked.

Top shutter not locked.Bottom shutter locked.

Top shutter locked.Bottom shutter not locked.

Top and bottom shutters locked.


E60

044A

CD2824822821

CD1814812811

CE3334332331

CE2324322321

CE1 CT1314 914312 912311 911

OF4444241

OF3343231

OF2 OF124 1422 1221 11

MX1C2C3C1

XFA2A3A1

PF254252251

Com UC1 UC2 UC3 M2C/UC4 SDE1E5E3E1

E6E4E2

Z5Z3Z1

M1Z4Z2

M2T3T1

M3T4T2

F2VNF1

484/V3474/V2471/V1

184/K2182181/K1

848281

MN/MX2D2/C12

C13D1/C11

MCHB2B3B1

SDE2/Res

MX1C2C3C1

XFA2A3A1

PF254252251

Com UC1 UC2 UC3 M2C/UC4 SDE1E5E3E1

E6E4E2

Z5Z3Z1

M1Z4Z2

M2T3T1

M3T4T2

F2VNF1

484/V3474/V2471/V1

184/K2182181/K1

848281

MN/MX2D2/C12

C13D1/C11

MCHB2B3B1

SDE2/Res

OF4444241

OF3343231

OF2 OF124 1422 1221 11

Identifying the electricalauxiliaries

Identification of the connectionterminalsLayout of terminal blocks


E60

060A

Operation

Circuit breaker

closed

completely closed completely open

main contacts

OF: ON/OFF (closed/open)indication changeover contacts

open

closed open

open closed

test position

separation of the auxiliary circuits

separation of the main circuits

completely connected

open

closed

closed

open

closed

open

CE: connected-positioncarriage switch

CT: test-position carriageswitch

CD: disconnected-positioncarriage switch

closed

open open

closed

completely disconnected

E60

061A

The ON/OFF indication contacts signal thestatus of the device main contacts.

ChassisFor information on the separation distance of the main circuits in the "test" and"disconnected" positions, see page 16.

The carriage switches indicate the"connected", "test" and "disconnected"positions.


Identifying the electricalauxiliaries

Electrical diagramsFixed and drawout devices

A P H

c c c

c c c

c c c

c c cc c c

c c c

c c

c c

c c

c c

/

/

E60

062A

The diagram is shown with circuitsde-energised, all devices open, connectedand charged and relays in normal position.

E60

063A

E60

064A

E60

067A

Power

Com : E1-E6 communication

UC1: Z1-Z5 zone selective interlocking;Z1 = ZSI OUT SOURCEZ2 = ZSI OUT; Z3 = ZSI IN SOURCEZ4 = ZSI IN ST (short time)Z5 = ZSI IN GF (earth fault)M1 = Vigi module input (Micrologic 7)

UC2: T1, T2, T3, T4 = external neutral;M2, M3 = Vigi module input(Micrologic 7)

UC3: F2+, F1– external 24 V DC powersupplyVN external voltage connector

UC4: V1, V2, V3 optional external voltageconnector

or

M2C: 2 programmable contacts (internalrelay); ext. 24 V DC power supplyrequired

or

M6C: 6 programmable contacts (externalrelay); ext. 24 V DC power supplyrequired.

Control unit

Control unit Remote operation

SDE2: Fault-trip indication contactorRes: Remote reset

SDE1: Fault-trip indication contact (supplied as standard)

MN: Undervoltage releaseorMX2: Shunt release

MX1: Shunt release (standard or communicating)

XF: Closing release (standard or communicating)

PF: "Ready to close" contact

MCH: Gear motor (*)

Note:When communicating MX or XF releases are used, the third wire(C3, A3) must be connected even if the communications module isnot installed.

A: Digital ammeterP: A + power meter + programmable protectionH: P + harmonics

471

S1

474

484

S2

474

Q1

Q2

Q3

M6C

M2C M6Cor

MX1

C2

C3

C1

BPO

A2

A3

A1

BPF

XFPF

252

254

251

read

y to

clos

e

B1

MCH

B3

B2

char

ged

CH

E60

065A

E46

136A

E46

137A

E60

066A

/

/

T4

T3

T2

T1

Micrologic

Z4

Z3

Z2

Z1

Z2

Z1N L3L2L1

Q

power upstream cb

Z5

VN

V1

V2

V3

M3

M2

M1

F2+

F1

I

U

downstream cb

24 V DCX2

X1

SG

2

SG

1

Z3

Z4

Z5

Z2

Z1

Z3

Z4

Z5

181

182

184

SDE2

faul

t

81

82 84

SDE1

K2

Res

K1

faul

t

or

D2

D1

AT

MN MX2

C12

C11

or

Remote operation

Remote operationSDE2 / Res SDE1 MN / MX2 MX1 XF PF MCH

184 K2 84 D2 C12 C2 A2 254 B2

182 82 C3 A3 252 B3

181 K1 81 D1 C11 C1 A1 251 B1

Control unitCom UC1 UC2 UC3 UC4 / M2C / M6C

E5 E6 Z5 M1 M2 M3 F2+ V3 484 Q3

E3 E4 Z3 Z4 T3 T4 VN V2 474 Q2

E1 E2 Z1 Z2 T1 T2 F1 – V1 471 Q1

/

/

/

/

/

/


E60

068A

E60

069A

E60

070A

E60

076A

Indication contacts

Indication contactsOF4 / OF3 / OF2 / OF1: ON/OFF indication contacts

(*) 440/480 V AC gear motor for charging(380 V motor + additional resistor)

CD2-CD1:Disconnected-position

CT1:Test-positioncontacts

Chassis contactsCD2 CD1 CE3 CE2 CE1 CT1

824 814 334 324 314 914

822 812 332 322 312 912

821 811 331 321 311 911

CE3-CE2-CE1:Connected-position

12 1411

22 2432 3431 21

OF4

42 4441

OF3 OF2 OF1

open closed

331

332

334

CE3

321

322

324

CE2

311

312

314

CE1

connected

Indication contactsOF4 OF3 OF2 OF1

44 34 24 14

42 32 22 12

41 31 21 11

Key:

Drawout device only

SDE1, OF1, OF2, OF3, OF4 supplied as standard

Interconnected connections(only one wire per connection point)

822

824

821

812

814

811

CD2 CD1

disconnected

914

912

911

CT1

test

Chassis contacts

Chassis contacts

B1

CN2 - 440/480 V

9 11

MCH380V

CH

B3 B2

R440/480 V"charged LED"

CN1 - 440/480 V

XXX

E60

075A


Discovering Masterpact’saccessories

Micrologic control units

E51

329A

E46

108A

For more in-depth information, see thecontrol-unit user manual.

Micrologic control units

Long-time rating plugs

c standard equipment,one per devicec part numbers(long-time rating plug andconnectors not included,see below):Micrologic 2.0: 33069Micrologic 5.0: 33070Micrologic 2.0A: 33071Micrologic 5.0A: 33072Micrologic 6.0A: 33073Micrologic 7.0A: 33074Micrologic 5.0P: 47058Micrologic 6.0P: 47059Micrologic 7.0P: 47060Micrologic 5.0H: 47061Micrologic 6.0H: 47062Micrologic 7.0H: 47063c part numbers forconnectors for A, P, H:v for fixed device: 47065v for drawout device:47066.

c depending on themodel, control units offerin addition:v fault indicationsv measurement ofelectrical parameters(current, voltage, power,etc.)v harmonic analysisv communication.

c M2C: 2 contacts(5 A - 240 V)c M6C: 6 contacts(5 A - 240 V).c permissible load oneach of the M6C relayoutputs at cos ϕ = 0.7v 240 V AC: 5 Av 380 V AC: 3 Av 24 V DC: 1.8 Av 48 V DC: 1.5 Av 125 V DC: 0.4 Av 250 V DC: 0.15 Ac M2C: 24 V DC ± 5 %power from control unitc M6C: 24 V DC ±5 %external supplyc maximumconsumption: 100 mA.

c standard equipment,one per control unitc part numbers forsetting options:v standard 0.4 to 1 x Irsetting: 33542v low 0.4 to 0.8 x Irsetting: 33543v high 0.8 to 1 x Irsetting: 33544v off (no long-timeprotection): 33545.

c the plugs determinethe setting range for thelong-time protection.

M2C and M6C programmable contacts

c optional equipment,used with Micrologic Pand H control unitsc part numbers(connectors not included,see below):v 2 M2C contacts: 47099v 6 M6C contacts: 33104c part numbers forconnectors:v for fixed device: 47074v for drawout device:33098.

c contacts can beprogrammed using thekeypad on the controlunit or via the COMoptionc they indicate:v the type of faultv instantaneous ordelayed thresholdoverruns.

Masterpact NW08-63 Schneider Electric31

Indication contacts

ON/OFF indication contacts (OF)

c 4 changeover contactsc breaking capacity atcos ϕ = 0.3 (AC12 /DC12 as per 947-5-1)v standard, minimumcurrent 10 mA / 24 VV AC 240/380 6 A (rms)

480 6 A (rms)690 6 A (rms)

V DC 24/48 2.5125 0.5250 0.3

v low level, minimumcurrent 1 mA / 4 VV AC 24/48 5 A (rms)

240 5 A (rms)380 5 A (rms)

V DC 24/48 5 / 2.5 A125 0.5 A250 0.3 A

"Fault-trip" indication contact (SDE/1)

c standard equipment oncircuit breakers, oneSDE/1 contact per devicec not available for switch-disconnector versions.

c changeover contactc breaking capacity atcos ϕ = 0.3 (AC12 /DC12 as per 947-5-1)v standard, minimumcurrent 10 mA / 24 VV AC 240/380 5 A (rms)

480 5 A (rms)690 3 A (rms)

V DC 24/48 3 A125 0.3 A250 0.15 A


240 3 A (rms)380 3 A (rms)

V DC 24/48 3 A125 0.3 A250 0.15 A

c standard equipment,4 OF per devicec part numbers:v standard: 47076v low level: 47077c part numbers forconnectors:v for fixed device: 47074v for drawout device:33098.

c the contact provides aremote indication ofdevice opening due to anelectrical fault.

c OF contacts indicatethe position of the maincontactsc they trip when theminimum isolationdistance between themain contacts is reached.

c optional equipment forcircuit breakers, oneadditional SDE/2 contactper devicec not available for switch-disconnector versionsc not compatible with theRes optionc part numbers(connectors not included,see below):v standard: 47078v low level: 47079c part numbers forconnectors:v for fixed device: 47074v for drawout device:33098.

Additional "fault-trip" indication contact (SDE/2)

c the contact remotelyindicates device openingdue to an electrical fault.

E60

054A


480 5 A (rms)690 3 A (rms)

V DC 24/48 3 A125 0.3 A250 0.15 A


240 3 A (rms)380 3 A (rms)

V DC 24/48 3 A125 0.3 A250 0.15 A



Indication contactsE

5133

2A

c optional equipment,one Res per devicec not compatible with theSDE/2 optionc part numbers(connectors not included,see below):v 110/130 V AC: 47082v 220/240 V AC: 47083c part numbers forconnectors:v for fixed device: 47074v for drawout device:33098.

Electrical reset after fault trip (Res)

c the contact remotelyresets the devicefollowing tripping due toan electrical fault.

"Springs charged" limit switch contact (CH)

c the contact indicatesthe "charged" status ofthe operating mechanism(springs charged).

"Ready to close" contact (PF)

c equipment includedwith MCH gear motor,one CH contact perdevice.

c changeover contactc breaking capacity 50/60 Hz for AC power(AC12 / DC12 as per947-5-1):V AC 240 10A(rms)

380 6 A (rms)480 6 A (rms)690 3 A (rms)

V DC 24/48 3 A125 0.5 A250 0.25 A

c optional equipment,one PF contact perdevicec part numbers(connectors not included,see below):v standard: 47080v low level: 47081c part numbers forconnectors:v for fixed device: 47074v for drawout device:33098.

c the contact indicatesthat the device may beclosed because all thefollowing are valid:v circuit breaker is openv spring mechanism ischargedv a maintained closingorder is not presentv a maintained openingorder is not present.

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480 5 A (rms)690 3 A (rms)

V DC 24/48 3 A125 0.3 A250 0.15 A


240 3 A (rms)380 3 A (rms)

V DC 24/48 3 A125 0.3 A250 0.15 A


Auxiliaries for remote operation

Gear motor (MCH)c the gear motorautomatically charges thespring mechanism.

c power supply:v V AC 50/60 Hz: 48/60100/130 - 200/240 - 277400/440 - 480v V DC: 24/30 - 48/60100/125 - 200/250c operating threshold:0.85 to 1.1 Unc consumption:180 VA or Wc inrush current:2 to 3 In for 0.1 secondc charging time:3 seconds max.c operating rate:maximum 3 cycles perminutec CH contact: see page32.

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Opening releases MX/1 and MX/2, closing release XF

c optional equipment, 1or 2 MX releases perdevice, 1 XF per devicec the function (MX or XF)is determined by wherethe coil is installedc part numbers(connectors not included,see below)V AC 50/60 Hz, V DC:v standard version:12 DC: 3365824/30 AC/DC: 3365948/60 AC/DC: 33660100/130 AC/DC: 33661200/250 AC/DC: 33662240/277 AC: 33663380/480 AC: 33664500/550 AC: 33665v communicating version(with COM option):12 DC: 3303224/30 AC/DC: 3303348/60 AC/DC: 33034100/130 AC/DC: 33035200/250 AC/DC: 33036240/277 AC: 33037380/480 AC: 33038c part numbers forconnectors:v for fixed device: 47074v for drawout device:33098.

c the MX releaseinstantaneously opensthe circuit breaker whenenergisedc the XF releaseinstantaneously closesthe circuit breaker whenenergised, if the device is"ready to close".

c optional equipment,one MCH gear motor perdevicec part numbers(connectors not included,see below):v AC 50 / 60 Hz:48/60: 33186100/130: 33176200/240: 33177277/415: 33179440/480: 33193 + 33179v DC24/30: 3318548/60: 33186100/125: 33187200/250: 33188c part numbers forconnectors:v for fixed device: 47074v for drawout device:33098.

c power supply:v V AC 50 / 60 Hz:24 48 - 100/130 - 200/250 240/277 - 380/480500/550v V DC: 12 - 24/3048/60 - 100/130200/250c operating threshold:v XF: 0.85 to 1.1 Unv MX: 0.7 to 1.1 Unc consumption:v pick-up: 200 VA or W(80 ms)v hold: 4.5 VA or Wc circuit-breakerresponse time at Un:v XF: 55 ms ± 10v MX: 50 ms ± 10.

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Instantaneous undervoltage releases (MN)

c optional equipment,1 MN per devicec not compatible with theMX/2 opening releasec part numbers(connectors not included,see below)V AC 50/60 Hz, V DC:24/30 AC/DC: 3366848/60 AC/DC: 33669100/130 AC/DC: 33670200/250 AC/DC: 33671380/480 AC: 33673500/550 AC: 33674c part numbers forconnectors:v for fixed device: 47074v for drawout device:33098.

c the MN releaseinstantaneously opensthe circuit breaker whenits supply voltage drops.

c power supply:v V AC 50/60 Hz: 24/48100/130 - 200/250240/277 - 380/480500/550v V DC: 24/30 - 48/60100/130 - 200/250c operating threshold:v opening: 0.35 to 0.7 Unv closing: 0.85 Unc consumption:v pick-up: 200 VA or W(80 ms)v hold: 4.5 VA or Wc circuit-breakerresponse time at Un:40 ms ± 10.

Auxiliaries for remote operationE

5129

4AE

5129

6A

c optional equipment,1 MN with delay unit perdevicec delay-unit partnumbersV AC 50/60 Hz, V DC:v non adjustable:100/130 AC/DC: 33684200/250 AC/DC: 33685v adjustable:48/60 AC/DC: 33680100/130 AC/DC: 33681200/250 AC/DC: 33682380/480 AC/DC: 33683.

Delay unit for MN releases

c the unit delaysoperation of the MNrelease to eliminatecircuit-breaker nuisancetripping during shortvoltage dipsc the unit is wired inseries with the MN andmust be installed outsidethe circuit breaker.

c power supply V AC 50/60 Hz, V DC:v non adjustable:100/130 - 200/250v adjustable:48/60 - 100/130200/250 - 380/480c operating threshold:v opening: 0.35 to 0.7 Unv closing: 0.85 Unc consumption:v pick-up: 200 VA or W(80 ms)v hold: 4.5 VA or Wc circuit-breakerresponse time at Un:v non adjustable:0.25 secondv adjustable: 0.5 - 0.9 -1.5 - 3 seconds.

3 6

MNUVR

1012

100/130 V

AC/DC

S

0.5 1

3 1.5

Retardateur de MN

Time delay for UVR

4 5 6

1 2 3

1 2 3

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c optional equipment,1 BPFE per devicec part number: 47512.

Electrical closing pushbutton (BPFE)

c located on the padlockor keylock lockingsystem, this pushbuttoncarries out electricalclosing of the circuitbreaker via the XFrelease, taking intoaccount all the safetyfunctions that are part ofthe control/monitoringsystem of the installationc it connects to the inputof the COM option.


Wiring of control auxiliariesUnder pick-up conditions, the level of consumption is approximately 150 to 200 VA.Consequently, for low supply voltages (12, 24, 48 V), cables must not exceed amaximum length determined by the supply voltage and the cross-section of thecables.

Indicative values for maximum cable lengths (in meters)

12 V 24 V 48 V2.5 mm2 1.5 mm2 2.5 mm2 1.5 mm2 2.5 mm2 1.5 mm2

MN 100%source voltage — — 58 36 280 16585%source voltage — — 16 10 75 45

MX / XF 100%source voltage 21 12 115 70 550 33085%source voltage 10 6 75 44 350 210

Note. The indicated length is that for each of the two supply wires.



Device mechanical accessories

Operation counter (CDM)

c optional equipment,one CDM per devicec part number: 33895.

c the operation countersums the number ofoperating cycles.

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Escutcheon (CDP)

c optional equipment,one CDP per devicec part numbers:v for fixed device: 33718v for drawout device:33857.

c the CDP increases thedegree of protection to IP40 and IK 07 (fixed anddrawout devices).

Transparent cover (CCP)

c optional equipment,one CCP per deviceequipped with a CDPc part number: 38859(for drawout devices).

c mounted with a CDP,the CCP increases thedegree of protection toIP 54 and IK 10 (fixedand drawout devices).

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497A

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Blanking plate (OP)

c optional equipment,one OP per devicec part number: 38858.

c used with theescutcheon, this optioncloses off the doorcut-out of a cubicle notyet equipped with adevice. It may be usedwith the escutcheon forboth fixed and drawoutdevices.

00399


Device mechanical accessoriesE

6034

7AE

6034

6A

Transparent cover for pushbutton locking using a padlock,lead seal or screws

c optional equipment,one locking cover perdevicec part number: 33897.

c the transparent coverblocks access (togetheror separately) to thepushbuttons used toopen and close thedevicec locking requires apadlock, a lead seal ortwo screws.

Device locking in the OFF position using a padlock

c optional equipment,one locking system perdevicec part number: 47514.

c the unit inhibits local orremote closing of thedevicec up to three padlocksmay be used for locking.

Device OFF position locking kit for keylocks

c optional equipment:one locking kit (withoutkeylock) per devicec part numbers:v for Profalux keylocks:47515v for Ronis keylocks:47516v for Castell keylocks:47517v for Kirk keylocks:47518.c optional equipment,one locking system perdevice.

c the kit inhibits local orremote closing of thedevicec mounted on thechassis and accessiblewith the door closed, thissystem locks the circuitbreaker in "disconnected"position using one or twokeylocks.

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Ronis

Profalux

Keylocks required for the device OFF position locking kit

c one or two keylocks perlocking kitc part numbers:v Ronis:1 keylock: 41940v Profalux:1 keylock: 42888.

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Chassis accessories

Safety shuttersc optional equipmentc part numbers (set ofshutters for top andbottom) drawout,front/rear connection:v 3 poles: 33765v 4 poles: 33766.

c mounted on thechassis, the safetyshutters automaticallyblock access to thedisconnecting contactcluster when the deviceis in the "disconnected"or "test" positions.

c IP 20 for chassisconnectionsc IP 40 for thedisconnecting contactcluster.

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Ronis

Profalux

Keylocks required with the "disconnected" position lockingsystem

c one or two keylocks perlocking systemc part numbers:v Ronis:1 keylock: 419401 keylock + one identicalkeylock: 419502 different key locks:2 x 41940v Profalux:1 keylock: 428881 keylock + one identicalkeylock: 428782 different key locks:2 x 42888.

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Top shutter closed Bottom shutter closed

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Circuit breaker locking in "disconnected" position

c optional equipment,one locking system perdevicec part numbers (keylocksnot included):v for Profalux keylocks:33769v for Ronis keylocks:33770v for Castell keylocks:33771v for Kirk keylocks:33772.

c mounted on thechassis and accessiblewith the door closed, thissystem locks the circuitbreaker in "disconnected"position using one or twokeylocks.

If specified when ordering the chassis, thislocking function may be adapted to operatein all positions ("connected", "test" and"disconnected"), instead of in"disconnected" position alone.


Door interlock

c optional equipment,one door interlock perchassisc part number: 33172.

c this device inhibitsopening of the cubicledoor when the circuitbreaker is in "connected"or "test" position.

c it may be mounted onthe left or right-hand sideof the chassis.

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Chassis accessories

Opush OFF

O OFF

Auxiliary terminal shield (CB)

c optional equipment,one CB shield perchassisc part numbers:3 poles: 337634 poles: 33764.

c the shield preventsaccess to the terminalblock of the electricalauxiliaries.

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"Connected", "disconnected" and "test" position carriageswitches (CE, CD, CT)

c optional equipment,one to six carriageswitchesc standard configuration,0 to 3 CE, 0 to 2 CD,0 to 1 CTc part numbers:v standard: 33170v low level: 33171.

c the carriage switchesindicate the threepositions:CE: connected positionCD: disconnectedposition (when theminimum isolationdistance between themain contacts and theauxiliary contacts isreached)CT: test position.

c changeover contactc breaking capacity atcos ϕ = 0.3 (AC12 /DC12 as per 947-5-1)v standard, minimumcurrent 10 mA / 24 VV AC 240 8 A (rms)

380 8 A (rms)480 8 A (rms)690 6 A (rms)

V DC 24/48 2.5 A125 0.8 A250 0.3 A


240 5 A (rms)380 5 A (rms)

V DC 24/48 2.5 A125 0.8 A250 0.3 A

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Racking interlock

c optional equipment,one racking interlock perchassisc part number: 33788.

c this device preventsinsertion of the rackinghandle when the cubicledoor is open.

c it is mounted on theright-hand side of thechassis.

Mismatch protection

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c optional equipment,one mismatch protectiondevice per chassisc part number: 33767.

c mismatch protectionoffers twenty differentcombinations that theuser may select toensure that only acompatible circuitbreaker is mounted on agiven chassis.


Inspecting and testingbefore use

Initial testsProcedure

A general check of the circuit breaker takes only a few minutes and avoids any riskof mistakes due to errors or negligence.A general check must be carried out:c prior to initial usec following an extended period during which the circuit breaker is not used.

A check must be carried out with the entire switchboard de-energised.In switchboards with compartments, only those compartments that may beaccessed by the operators must be de-energised.

Electrical testsInsulation and dielectric-withstand tests must be carried out immediately afterdelivery of the switchboard. These tests are precisely defined by internationalstandards and must be directed and carried out by a qualified expert.

Prior to running the tests, it is absolutely necessary to:c disconnect all the electrical auxiliaries of the circuit breaker (MCH, MX, XF, MN,Res electrical remote reset)c remove the long-time rating plug on the 7.0 A, 5.0 P, 6.0 P, 7.0 P, 5.0 H, 6.0 H,7.0 H control units. Removal of the rating plug disconnects the voltagemeasurement input.

Switchboard inspectionCheck that the circuit breakers are installed in a clean environment, free of anyinstallation scrap or items (tools, electrical wires, broken parts or shreds, metalobjects, etc.).

Conformity with the installation diagramCheck that the devices conform with the installation diagram:c breaking capacities indicated on the rating platesc identification of the control unit (type, rating)c presence of any optional functions (remote ON/OFF with motor mechanism,auxiliaries, measurement and indication modules, etc.)c protection settings (long time, short time, instantaneous, earth fault)c identification of the protected circuit marked on the front of each circuit breaker.

Condition of connections and auxiliariesCheck device mounting in the switchboard and the tightness of power connections.Check that all auxiliaries and accessories are correctly installed:c electrical auxiliariesc terminal blocksc connections of auxiliary circuits.

OperationCheck the mechanical operation of the circuit breakers:c opening of contactsc closing of contacts.

Check on the control unitCheck the control unit of each circuit breaker using the respective user manuals.

These operations must be carried out inparticular before using a Masterpact devicefor the first time.


Note the faultFaults are signalled locally and remotely by the indicators and auxiliary contactsinstalled on circuit breakers (depending on each configuration). See page 12 in thismanual and the user manual of the control unit for information on the faultindications available with your circuit breaker.

Identify the cause of trippingA circuit must never be reclosed (locally or remotely) before the cause of the faulthas been identified and cleared.

A fault may have a number of causes:c depending on the type of control unit, fault diagnostics are available. See the usermanual for the control unit.c depending on the type of fault and the criticality of the loads, a number ofprecautionary measures must be taken, in particular the insulation and dielectrictests on a part of or the entire installation. These checks and test must be directedand carried out by qualified personnel.

Inspect the circuit breaker following a short-circuitc check the arc chutes (see page 43)c check the contacts (see page 43)c check the tightness of connections (see the device installation manual)c check the disconnecting-contact clusters (see page 43).

Reset the circuit breakerThe circuit breaker can be reset locally or remotely. See page 12 in this manual forinformation on how the circuit breaker can be reset.

What to do when the circuitbreaker trips


Interval Operation Procedureeach year c open and close the device v see pages 10 and 11

locally and remotely,successively using the variousauxiliariesc test the operating sequences v see pages 10 and 11c test the control unit using v see the user manual ofthe mini test kit the control unit

every two years or c check the arc chutes v see page 43when the control-unit c check the main contacts v see page 43maintenance indicator c check the tightness v see the devicereaches 100 of connections installation manual

Maintaining Masterpactperformance

Recommended maintenanceprogram

Periodic inspections required

Type of Maximum Service life of various partscircuit service lifebreaker

Arc chutes, Connecting-rod MX / XF / MN

main contacts springs, MCH, releases

interlocking

systemsNT08 to 10 25000 440 V: 6000 12500 12500type H1 690 V: 3000NT12 25000 440 V: 6000 12500 12500type H1 690 V: 2000NT16 25000 440 V: 3000 12500 12500type H1 690 V: 1000NT08 to 10 25000 440 V: 3000 12500 12500type L1 690 V: 2000

Recommended program for devices usedunder normal operating conditions:Ambient temperature: -5 °C / +70 °CNormal atmosphere

Part Intervening entity Description orprocedure

arc chutes c user v see page 43main contacts c inspection: user v see page 43

c replacement:Schneider After Sales Support

MCH gear motor c user v see page 9mechanical interlocks c userconnecting-rod c Schneider After Salessprings SupportMX/MN/XF c user v see pages 10 and 11

Parts requiring replacement, depending on the number ofoperating cyclesThe following parts must be replaced periodically to lengthen the service life of thedevice (maximum number of operating cycles).

Part replacement must be programmed on the basis of the data below, listing theservice life of the various parts in numbers of O/C cycles at the rated current.

Number of O/C cycles at the rated current


Arc chutesc remove the fixing screws

Maintenance operations

Before undertaking any maintenance work,de-energise the installation and fit locks orwarnings in compliance with all applicablesafety standards. 22

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If the control unit has a maintenanceindicator, there is no need to systematicallycheck the contacts.

If the contacts are worn, have theconcerned poles replaced by the Schneiderservice centre.

1

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33E60

001A

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Wear of main contactsc remove the arc chutesc visually check the contacts.If necessary, contact Schneider After-sales support.

c check the arc chutes:v chamber intactv separators not corroded.

If necessary, replace the arc chutes.

c refit the arc chutes and secure with a tightening torque of 1.5 Nm.

Disconnecting-contact clustersc grease the contacts using the grease listed on page 44, supplied by SchneiderElectricc check the contacts as follows:v open the circuit breakerv de-energise the busbarsv disconnect the circuit breakerv remove the circuit breakerv check the contact fingers (no sign of copper should be visible).Replace any worn clusters.



Ordering replacement parts

Electrical accessoriesThe electrical accessories that may require replacement are the following:c MCH gear motorc MX opening release(s)c XF closing releasec MN undervoltage release.

See pages 33 and 34 in the "Auxiliaries for remote operation" section for theircharacteristics and part numbers.

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Arc chutes

c part numbers(1 arc chute):v type H1: 47095v type L1: 47096.

c one chute per pole.

Front

c part number: 47094. c 1 per 3- or 4-pole device.

Crank

c part number (1 crank):47098.

c 1 per device.

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c 1 per device.

Charging handle

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c part number (1 handle):47092.

Support for MX / XF / MN releases

c part number: 47093. c 1 per device.

Disconnecting-contact clusters

c part number (1 cluster):33166.

Grease for disconnecting-contact clusters

c part number (1 can):33160.

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Troubleshooting andsolutions

Problem Probable causes Solutionscircuit breaker cannot be closed remotely or locally c circuit breaker padlocked or keylocked v disable the locking function

in the "open" positionc circuit breaker interlocked v modify the situation to release the

interlockc circuit breaker not completely connected v terminate racking in (connection)

of the circuit breakerc pushbutton indicator signalling a fault v reset the pushbutton indicatortrip has not been resetc circuit breaker not charged (spring v if the circuit breaker is not equippedmechanism) with an MCH gear motor, charge it

manuallyv if it is equipped with an MCH gearmotor, check the supply of power tothe motor

c MX shunt release supplied with power v there is an opening order.Determine the origin of the order.The order must be cancelled beforethe circuit breaker can be closed.

c MN undervoltage release activated v there is an opening order.Determine the origin of the order.v check the voltage and the supplycircuit (U > 0.85 Un)

c the XF closing release continuously v cut the supply of power to the XFsupplied with power, but circuit closing release, then send the closingbreaker not "ready to close" order again via the XF, but only if the(XF not wired in series with PF contact) circuit breaker is "ready to close"

circuit breaker cannot be closed remotely, can be c XF closing release not supplied with v check the voltage and the supplyopened locally using the closing pushbutton enough power circuit (U > 0.85 Un)unexpected tripping (pushbutton indicator signalling c MN undervoltage release supply voltage v check the voltage and the supplya fault trip not activated) too low circuit (U > 0.85 Un)

c load-shedding order sent by another v check the overall load on thedevice distribution system

v if necessary, modify the settings ofdevices in the installation

c untimely opening order from the MX v determine the origin of the ordershunt release

unexpected tripping (pushbutton indicator signalling c overload v determine and clear the causes ofa fault trip activated) c earth fault the fault

c short-circuit v check the condition of theMasterpact device before putting itback into service

instantaneous opening after each attempt to close c thermal memory v see the user manual of thethe circuit breaker (indicated by the pushbutton indicator control unitsignalling a fault trip) v reset the pushbutton

c transient overcurrent when closing v modify the distribution system orthe control-unit settingsv check the condition of theMasterpact device before puttingit back into servicev reset the pushbutton

c closing on a short-circuit v clear the faultv check the condition of theMasterpact device before puttingit back into servicev reset the pushbutton

circuit breaker cannot be opened remotely, can be c opening order not executed by the v check the voltage and the supplyopened locally MX shunt release circuit (U > 0.85 Un)

c opening order not executed by the v drop in voltage insufficient orMN undervoltage release residual voltage (> 0.35 Un) across

the terminals of the undervoltagerelease

circuit breaker cannot be recharged electrically, can be c insufficient supply voltage for the MCH v check the voltage and the supplycharged manually gear motor circuit (U > 0.85 Un)nuisance tripping of the circuit breaker (with c reset pushbutton indicator not pushed-in v push in completely the resetpushbutton indicator signalling a fault trip) completely pushbutton indicator


Problem Probable causes Solutionscircuit breaker cannot be disconnected (racked out): c chassis locking or racking interlock v disable the locking functionimpossible to insert the crank function enabledcircuit breaker cannot be disconnected (racked out): c the reset button has not been pressed v press the reset buttonoperation impossiblecircuit breaker cannot be removed from chassis c circuit breaker not in disconnected v turn the crank until the circuit

position breaker is in disconnected positionand the reset button out

c the rails are not completely out v pull the rails out completelycircuit breaker cannot be connected (racked in) c mismatch protection v check that the chassis corresponds

with the circuit breakerc the safety shutters are locked v remove the lock(s)c the disconnecting-contact clusters v reposition the clustersare incorrectly positionedc chassis locking enabled v disable the chassis locking functionc the reset button has not been pressed v press the reset buttonc the circuit breaker is not sufficiently v insert the circuit breaker completelyinserted so that it is engaged in the racking

mechanismcircuit breaker cannot be locked in disconnected c the circuit breaker is not in the right v check the circuit breaker position byposition position making sure the reset button is out

c the crank is still in the chassis v remove the crank and store itcircuit breaker cannot be locked in connected, c check that the right types of locks v contact our service centretest or disconnected position have been installed

c the circuit breaker is not in the right v check the circuit breaker positionposition by making sure the reset button is outc the crank is still in the chassis v remove the crank and store it


Checking Masterpactoperating conditions

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Masterpact NT devices can operate under the following temperature conditions:c the electrical and mechanical characteristics are stipulated for an ambienttemperature of -5 °C to +70 °Cc circuit-breaker closing is guaranteed down to -35 °Cc Masterpact NW (without the control unit) can be stored in an ambienttemperature of -40 °C to +85 °Cc the control unit can be stored in an ambient temperature of -25 °C to +85 °C.

Extreme atmospheric conditionsMasterpact NT devices have successfully passed the tests defined by the followingstandards for extreme atmospheric conditions:c IEC 68-2-1: dry cold at -55 °Cc IEC 68-2-2: dry heat at +85 °Cc IEC 68-2-30: damp heat (temperature +55 °C, relative humidity 95%)c IEC 68-2-52 level 2: salt mist.

Masterpact NT devices can operate in the industrial environments defined bystandard IEC 947 (pollution degree up to 4).

It is nonetheless advised to check that the devices are installed in suitably cooledswitchboards without excessive dust.

VibrationsMasterpact NT devices resist electromagnetic or mechanical vibrations.Tests are carried out in compliance with standard IEC 68-2-6 for the levels requiredby merchant-marine inspection organisations (Veritas, Lloyd’s, etc.):c 2 to 13.2 Hz: amplitude ±1 mmc 13.2 to 100 Hz: constant acceleration 0.7 g.

Excessive vibration may cause tripping, breaks in connections or damage tomechanical parts.


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2000

m

AltitudeMasterpact NT devices are designed for operation at altitudes under 2000 metres.

At altitudes higher than 2000 metres, the modifications in the ambient air(electrical resistance, cooling capacity) lower the following characteristics.

altitude (m) 2000 3000 4000 5000dielectric withstand 3500 3150 2500 2100voltage (V)rated insulation level (V) 1000 900 700 600rated operational 690 590 520 460voltage (V)rated current (A) at 40 °C 1 x In 0.99 x In 0.96 x In 0.94 x In

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Electromagnetic disturbancesMasterpact NT devices are protected against:c overvoltages caused by devices that generate electromagnetic disturbancesc overvoltages caused by an atmospheric disturbance or by a distribution-systemoutage (e.g. failure of a lighting system)c devices emitting radio waves (radios, walkie-talkies, radar, etc.)c electrostatic discharges produced by users.

Masterpact NT devices have successfully passed the electromagnetic-compatibilitytests (EMC) defined by the following international standards:c IEC 947-2, appendix Fc IEC 947-2, appendix B (trip units with earth-leakage function).

The above tests guarantee that:c no nuisance tripping occursc tripping times are respected.

Schneider Electric Industries SA

5, rue Nadar92506 Rueil-Malmaison Cedex FranceTe l : +33 (0)1 41 29 82 00Fax : +33 (0)1 47 51 80 20

http://www.schneiderelectric.com

51201116AA-B

Designed by: HeadLinesPrinted by:

As standards, specifications and designs develop from time, always ask for confirmation of theinformation given in this publication.

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