1. Understanding Masterpact NT & NW1

2. Auxiliaries and accessories Drawout installation Fixed Installation
NW breaker frame
Micrologic socket
Auxiliaries and accessories
Drawout installation
Fixed Installation
Range and performances 2

3. Contents NW breaker frame
Case
Moving contact
Current transformers
Power supply
Fixed contact
Assembly
Arc chamber
Opening of contacts
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4. Case Supports the opening /closing mechanism
stored energy mechanism (OCO sequence )
Insulated organic polymer material
Fire proof
No halogen

5. Moving contact Complete assembly fingers, braids, terminal
no internal bolted joint
High electromechanical and thermal withstand
blow on
Specific limiter contact assembly
L1 performance
Direct link to the OCO mechanism
Isolated compartments

6. Current transformers Combined technology
air core for measurement (Rogowsky)
measurement precision 1%
linearity from 40A to 400kA
self powered
iron core for trip unit power
Integral connector
automatically connected
One CT per pole
Mounted on bottom side of moving contact

7. Micrologic trip unit power supply
Circuit breaker
Micrologic
Communication module
COM Module
ASIC
Microprocesseur
Additionals functions (measurement, analyses...)
Basic protection
Optical
coupling
Air CT
Isolation
Power supply
Trip unit
power supply
Iron CT
Optional external 24V DC power supply for :
programmable contact power supply,
when breaker is open :
Powers display,
Identification, adjustments through “Com” module
BUS power supply
Standard Internal voltage sensor or
optional external voltage sensor for
µP power supply and measurement

8. Fixed Contact Breaking the arc
arcing contact protects main contacts against wear
high number of electrical operation
increased life expectation
Top terminal
no internal joint

9. Assembly Reliability reduced number of components simple concept
compact
modular
Three cases (3x3P & 3x4P) NT NW
NW 40b - 63

10. Arc chamber Increased arc impedance favors extinguishing properties
patented metallic filter
high porosity
energy and gas absorption results in de-ionization of external gas
Reduced external projections
Reduced enclosure pressure
Safety clearance above arc chamber
NW : not required
NT : D/O no, Fixed reduced
Removable for contact inspection NT NW

11. Opening of contacts Commutation principle
Contact pads protected from the electric arc for better performance
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12. Contents Micrologic socket
Mitop trip solenoid
Making current release (DINF)
NW Interface
Trip alarm contact
Remote reset
2 contacts module
Communication module
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13. Mitop trip solenoid
Transforms the trip command into a mechanical operation to open the breaker
Activate the alarm contact (SDE) NW

14. Making current release (DINF)
Self protection of the breaker when closing on very high fault current
Standard on all NT and NW breakers NW

15. NW Interface NW Accessory fixture Trip alarm contact SDE 1
communication module
Auto trip controller :
Missing trip unit
security feature
identical on NT NW

16. Alarm trip contact SDE
Trip signalisation on electrical fault (Mitop command)
Standard changeover contact 10A 240V on all NT and NW breakers
Optional : second alarm trip contact SDE 2
standard or low level NT NW

17. Remote reset NT NW Remote reset of a tripped breaker
automatic reset of the mechanical indicator
2 voltages :
110 / 130 V AC
200 / 240 V AC
Exclusive with the second SDE NT NW

18. 2 contacts module M2C programmable contacts :
to energize bell or visual alarms
to shed and reconnect non priority circuits …
2 closing contacts 10 A 240V AC
Monitored by Micrologic P et H
M6C : 6 programmable contacts in external DIN case NT NW

19. Communication module NT Independent modules Breaker module
data transmission
threshold adjustment
breaker status
breaker monitoring
breaker identification
wave form capture
readings of histories & logs
Chassis module
transmission of « connected, test, disconnected » positions NT
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20. Contents Auxiliaries and accessories
Electrical operating mechanism
Voltage releases
Auxiliaries connection block support
« OF » auxiliary switches
« Ready to close » contact
Locking accessories and BPFE
Control unit
Operation counter
Front cover
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21. Electrical operating mechanism MCH
Charges and automatically recharges the stored-energy spring upon breaker closing AC
50 / 60 Hz
100V to 480V CA
7 references DC
24V to 250V
4 references
Charging time : 4 s maxi
Easy installation : 1 screw
Local and remote signalisation of « spring charged »
mechanical indicator «charged»
Changeover contact 10A 240V NT NW

22. Voltage releases Closing (XF) & opening (MX) coils AC 50/ 60 Hz
from 12V to 525V
8 references
Com compatible 12 to 480V DC
from 24V to 250 V
4 references
Security opening coils MN and MNR
from 24 to 525V
7 references
5 references NT NW

23. NW Auxiliaries connection block support
Allows the fixation of auxiliary connectors
MN or MX2
MX1 XF PF
MCH
Supports the « OF » changeover switch block NW

24. OF auxiliary switches NT NW NW standard : block of 4 OF contacts
optional :2 additional blocks
changeover contact 10A 480V low level compatible
simplified mounting : 2 screws
rotative contacts directly operated by mechanism NT
standard :4 OF contacts
identical to Compact NS
changeover switch 6A 480V
optional : low level contact 5A 480V
clip on type NT NW

25. Ready to close contact PF
Changeover contact 10A 240V
Indicates :
the breaker is open
the stored energy mechanism is charged
the mechanism is correctly reset
the breaker opening push button is not locked
no opening order is present NT

26. Installation of Micrologic socket
Left side
The socket supports
communication module
Micrologic control unit NW

27. « open » position breaker lockingNW
key locking :1 or 2 locks
padlocking : up to 3 padlocks
electrical closing pushbutton (BPFE) available on support NT
key locking :1lock
Locks
Ronis, Profalux, Castel NT NW

28. Micrologic control units
4 protection levels
LI, LSI, LSIG, LSIV
Combined with 3 measurement levels
A : current
P : A + voltage + power + energy
H : P + energy quality management (harmonics)
Available functions
monitoring and protection
measure
network monitoring
maintenance help

29. Micrologic control units
Common to all NT and NW breakers
CT rating / performance socket
breaker rating
breaking capacity (N1, H1, H2, H3, L1)
Circuit breaker is maintained in open position when control unit is missing
Interchangeable on site NT NW

30. secondary wiring support control unit and « com » moduleNW
Communication
ZSI
External neutral
Earth leakage protection (vigi)
Control unit external 24V voltage supply
External voltage (phases and neutral)
Programmable contacts M2C or M6C NT
identical except external voltage exclusive with M2C/M6C NT NW

31. Operation counter
Sums the number of operating cycles (closing /opening)
maintenance help
Easy installation
Visible on the front panel NW

32. Front cover Front cover installed provides double insulation
IP 20 : finger safe
Attractive design NT NW
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33. Contents Drawout installation
Drawout accessories
Chassis
Auxiliaries terminals
Extracting the rail
Racking sequence
Primary connectors
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34. Masterpact NT Lateral side panels
Supports breaker on rails
Carrying handles
Easy installation with 4 screws NT

35. Drawout connectors Connection between beaker and chassis Connectors
Vertically oriented for optimal heat dissipation NT NW
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36. Chassis Back mold Clusters Shutters Positions Secondary terminals
Breaker installation

37. Back mold NW Support interface primary clusters
customer bus connection point
Location of the shutters NW

38. Chassis assembly Arc chute cover installed as standard
2 sizes of chassis
800 A A
4000 A A
2 variants 3P 4P NT NW

39. Clusters
One fits all !
Vertical orientation for better heat dissipation
10 fingers on each cluster across the entire range
Clip on type
Number of clusters depends on breaker frame size NT NW

40. Shutters actuator NW Reversible upper and lower Quick installation
Controlled by rear of breaker NW

41. Safety shutter installation
Safety shutters « up » and « down » identical but independent
Shutter locking NW
in front of the chassis
on the primary stabs NT
on the primary stabs only NT NW

42. Chassis position contacts Connected - test - disconnectedNW
3 changeover contacts 10A 240V for each position
activated by actuators
Possible to replace the test and disconnected actuator by the connected actuator to get 9 CE contacts NT
3 CE, 2 CD, 1 CT
Combined «connected/closed » contacts (EF) NT NW

43. Auxiliaries terminals
2 wires from 0,75 to 2,5mm²
Predefined position
Simple identification
Quick connection
Easy installation NT NW

44. Auxiliaries cover Protection of auxiliary wires
Easy identification by tampoprinting
Quick mounting with 2 screws NT NW
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45. Extracting the rails and installing the breaker
Interlock must be defeated before removing breaker
Provides guide for breaker
Breaker slides in manually to disconnected position NT NW
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46. Racking sequence with crank handle
Safety
Automatically opens breaker before connecting or disconnecting
mechanical stop in all positions
Push button for releasing each mechanical stop NT NW
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47. Primary connectors Connector options Rear connectors Mixed connectors
Front connectors
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48. NW connector options NW Rear connectors NW 08- 32 & NW40b- 50
Al ( )
Cu ( )
vertical or horizontal
NW 40 & NW 63
specific rear connectors
Front connectors
Al ( )
Cu ( )
thickness : 20 mm for all connectors
identical top and bottom connector NW

49. NT connector options NT Rear connectors NT 06 - 16 copper 15 mm
identical for fixed and drawout
Front connectors
long connector on top
short connector on bottom side
Options for front or rear connectors
Spreaders
pole pitch 95 mm
edgewise terminal extension
additional connectors ( eg: for cripmled lugs) NT

50. Primary connection Vertical / horizontal rear
Connectors matched to breaker size NT NW
NW 40b - 63
pole pitch :70, 115, 230 mm
Specific rear connectors for NW40
Pole pitch :
150 mm horizontal
115 mm vertical
identical for fixed and drawout NT NW

51. Primary connection mixed
Without modification of the breaker depth, the primary connectors may be rotated
Mixed connectors
Coupling torque
on the breaker 16mN
busbars to primaries 50mN NT NW

52. Front connection NW NT Draw out breaker top side : long connectors
bottom side : short connectors
spreaders option
pole pitch : 95 mm NW
Front connection limited to 3200 A
identical top and bottom connectors NW
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53. Fixed installation Support bracket
Vertical or horizontal mounting up to 4000A
Secondary terminals
2 wires from 0,75 to 2,5mm²
position predefined
simplified identification
quick connection
simple installation
Rotatable primary connectors
same as draw out breaker NT NW

54. Fixed installation Front connection and accessories
Identical top and bottom connectors
thickness 12 mm
Accessories
Spreaders
pole pitch 95 mm
edgewise terminal extension
additional connectors ( eg: for cripmled lugs)
thickness 12 mm for all accessories
adaptable on fixed or draw out NW
top side: long connectors
bottom side: short ones
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55. Contents Range and performances
General characteristics
NT 3/4P dimensions
NW 3P dimensions
NW 4P dimensions
NT & NW performances
IcU / Icw
endurances
Micrologic range
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56. General characteristics
Insulation voltage : 1000V
Impulse withstand voltage : 12kV
rated voltage : 690V
Specific versions
Switch
1000V AC DC
400Hz - 16Hz 2/3
Transfer switches
Manual, remote controlled
Automatic
by rods : 2 NT & 2NW
by cables : 2NT, 1NT+1NW 2NW, 3NW

57. Masterpact NT 06 - 16 3P / 4P Overall dimensions
height and depth fixed
Weight
fixed : 13 / 18 Kg
draw out : 30 / 40 Kg
Neutral Pole
On left by default
protection : 1/2, full, off
F: 259
D: 322
3P F: 210 D: 288
4P F: 245 D: 358
F: 290
D: 277

58. Masterpact NW 08-40 & 40b-63 3P Overall dimensions
Height and depth fixed
double poles construction for Masterpact NW 40b-63
Weight
fixed :
NW : 60 Kg
NW 40b - 63 : 120 Kg
draw out :
NW : 90 Kg
NW 40b - 63 : 225 Kg
pole pitch :
115 mm / 230 mm
F: 352
D: 439
F: D: 441
F: 297
D: 394
F: 352
D: 479
F: 297
D: 394
F: D: 786

59. Masterpact NW 08-40 & 40b-63 4P Neutral pole on left as default
protection : 1/2, full, off
Overall dimensions
Height and depth fixed
double poles construction for Masterpact NW 40b-63
weight
fixed
NW : 80 Kg
NW 40b - 63 : 160 Kg
draw out :
NW : 120 Kg
NW 40b - 63 : 300 Kg
F: 352
D: 439
F: 297
D: 394
F: D: 556
F: 352
D: 479
F: 297
D: 394
F: D: 1016

60. Masterpact NT Performances 220V to 440V
Icw (0,5 s) L1 H1

61. Masterpact NW Performances 220V to 440V
Icw (1s) L1 H3 H2 H1 N1

62. Performances NT & NW endurance
Mechanical endurance :
Electrical endurance :
With maintenance
Without maintenance
Nbre de cycles (x1000)
Without maintenance
Nbre de cycle (x1000)

63. Current protection type
Micrologic range
Micrologic A
Measurement type
version
Current protection type
Current protection type
2 : Distribution L, I
5 : Selective L, S, I
6: Selective and ground fault
L, S, I, G
7 : Selective and earth leakage
L, S, I, V A P H
2.0 A
5.0 A
6.0 A
7.0 A
5.0 P
6.0 P
7.0 P
5.0 H
6.0 H
7.0 H
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64. Things will never be the same