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 NT Schneider Electric3
Masterpact NT Schneider Electric4
Discovering Masterpact
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
Masterpact NT Schneider Electric5
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
Masterpact NT Schneider Electric6
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
BPFE electrical closing pushbutton
Opening pushbutton
Keylock for locking in open position
Padlock for lockingin open position
Side plate fordrawout device
Discovering Masterpact
Masterpact NT Schneider Electric7
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
BPFE electrical closing pushbutton
BPFE electrical closing pushbutton
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
Masterpact NT Schneider Electric8
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
Masterpact NT Schneider Electric9
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
Masterpact NT Schneider Electric10
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"
Masterpact NT Schneider Electric11
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
Masterpact NT Schneider Electric12
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
Masterpact NT Schneider Electric13
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.
Masterpact NT Schneider Electric14
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.
Masterpact NT Schneider Electric15
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
Masterpact NT Schneider Electric16
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
Masterpact NT Schneider Electric17
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).
Masterpact NT Schneider Electric18
Using the Masterpactdrawout chassis
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
Masterpact NT Schneider Electric19
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.
Masterpact NT Schneider Electric20
Using the Masterpactdrawout chassis
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
Masterpact NT Schneider Electric21
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
Masterpact NT Schneider Electric22
Using the Masterpactdrawout chassis
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.
Masterpact NT Schneider Electric23
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
Masterpact NT Schneider Electric24
Using the Masterpactdrawout chassis
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
Masterpact NT Schneider Electric25
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.
Masterpact NT Schneider Electric26
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
Masterpact NT Schneider Electric27
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.
Masterpact NT Schneider Electric28
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
/
/
/
/
/
/
Masterpact NT Schneider Electric29
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
Masterpact NT Schneider Electric30
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
v low level, minimumcurrent 1 mA / 4 VV AC 24/48 3 A (rms)
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
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
v low level, minimumcurrent 1 mA / 4 VV AC 24/48 3 A (rms)
240 3 A (rms)380 3 A (rms)
V DC 24/48 3 A125 0.3 A250 0.15 A
Masterpact NT Schneider Electric32
Discovering Masterpact’saccessories
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.
E60
050A
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
v low level, minimumcurrent 1 mA / 4 VV AC 24/48 3 A (rms)
240 3 A (rms)380 3 A (rms)
V DC 24/48 3 A125 0.3 A250 0.15 A
Masterpact NT Schneider Electric33
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.
E51
294A
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.
E46
790A
Masterpact NT Schneider Electric34
Discovering Masterpact’saccessories
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
E60
344A
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.
Masterpact NT Schneider Electric35
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.
Masterpact NT Schneider Electric36
Discovering Masterpact’saccessories
Device mechanical accessories
Operation counter (CDM)
c optional equipment,one CDM per devicec part number: 33895.
c the operation countersums the number ofoperating cycles.
E60
499A
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).
E47
341A
E60
497A
E60
498A
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
Masterpact NT Schneider Electric37
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.
E60
348A
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.
E51
286A
E51
287A
Masterpact NT Schneider Electric38
Discovering Masterpact’saccessories
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.
E60
030A
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.
E51
286A
E51
273A
E51
287A
E51
274A
Top shutter closed Bottom shutter closed
E60
031A
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.
Masterpact NT Schneider Electric39
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.
E60
011A
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.
E60
345A
"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
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 2.5 A125 0.8 A250 0.3 A
E46
095A
E51
498A
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
E59
190A
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.
Masterpact NT Schneider Electric40
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.
Masterpact NT Schneider Electric41
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
Masterpact NT Schneider Electric42
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
Masterpact NT Schneider Electric43
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
E60
045A
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
E60
000A
33E60
001A
E60
002A
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.
Masterpact NT Schneider Electric44
Maintaining Masterpactperformance
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.
E60
002A
E60
349A
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.
E51
336A
c 1 per device.
Charging handle
E60
496A
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.
E46
237A
Masterpact NT Schneider Electric45
Masterpact NT Schneider Electric46
Maintaining Masterpactperformance
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
Masterpact NT Schneider Electric47
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
Masterpact NT Schneider Electric48
Checking Masterpactoperating conditions
E60
004A
E60
005A
E60
003A Ambient temperature
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.
Masterpact NT Schneider Electric49
E60
006A
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
E60
007A
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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