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Functions and
characteristics
Accessories and auxiliaries
Motor mechanism
PB103372-30
Compact NSX250 with motor mechanism.
When equipped with a
motor-mechanism
module, Compact NSX circuit breakers
feature very high mechanical endurance as well as easy and sure operation:
all circuit-breaker indications and information remain visible and accessible,
b
including trip-unit settings and indications
suitability for isolation is maintained and padlocking remains possible
b
double insulation of the front face.
b
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function. This
communicating motor mechanism
must be connected to the BSCM
module to receive the opening and closing orders. Operation is identical to that of a
standard motor mechanism.
Applications
Local
b
motor-driven operation, centralised operation, automatic distribution control.
Normal/standby source changeover or switching to a replacement source to
b
ensure availability or optimise energy costs.
Load shedding and reconnection.
b
Sy
b
nchrocoupling.
Operation
The type of operation is selected using the manual/auto mode selection switch (
7
).
A transparent, lead-seal cover controls access to the switch.
Automatic
When the switch is in the "auto" position, the ON/OFF (I/O) buttons and the charging
lever on the mechanism are locked.
Circuit-breaker ON and OFF controlled by two impulse-type or maintained signals.
b
Automatic spring charging following voluntary tripping (by MN or MX), with
b
standard wiring.
Mandatory manual reset following tripping due to an electrical fault.
b
Manual
When the switch is in the "manual" position, the ON/OFF (I/O) buttons may be used.
Amicroswitch linked to the manual position can remote the information.
Circuit-breaker ON and OFF controlled by 2 pushbuttons I/O.
b
Recharging of stored-energy system by pumping the lever 8 times.
b
Padlocking in OFF position.
b
Installation and connections
All installation
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maintained.
Motor-mechanism module connections are made behind its front cover to integrated
terminals, for cables up to 2.5 mm².
Optional accessories
Keylock
b
for locking in OFF position.
Operations counter for the Compact NSX400/630, indicating the number of ON/
b
OFF cycles. Must be installed on the front of the motor-mechanism module.
Characteristics
Motor mechanism
MT100 to MT630
Response time (ms)
opening
closing
< 600
< 80
Operating frequency
F\FOHV PLQXWH PD[
4
Control voltage (V)
DC
24/30 - 48/60 - 110/130 - 250
AC 50/60 Hz
48 (50 Hz) - 110/130 -
220/240 - 380/440
Consumption
(1)
DC (W)
opening
closing
y
500
y
500
AC (VA)
opening
closing
y
500
y
500
(1)
For NSX100 to NSX250, the inrush current is 2 In for 10 ms.
Electrical endurance
DB111335
dis
c
h
a
rged
0
OFF
OFF
ON
3
1 2
5 6
78
4
1
Position indicator
(positive contact indication)
2
Spring status indicator (charged, discharged)
3
Manual spring-charging lever
4
Keylock device (optional)
Locking device (OFF position), using 1 to 3 padlocks,
shackle diameter 5 to 8 mm, not supplied
5
I (ON) pushbutton
6
O (OFF) pushbutton
7
Manual/auto mode selection switch. The position of this
switch can be indicated remotely.
8
Operation counter (Compact NSX400/630)
DB115690
0.
2
0.
7
1
0.5
0.3
NS100
NS160
NS250
NS400
NS6
3
0
50
40
30
2
0
15
10
6
4
0.1
I/In
Circuit breaker + motor-
mechanism module, in
thousands of operations
(IEC 60947 2), at 440 V.
559E1880.indd
version: 1.0