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A-65
Electrically operated circuit breaker
The motor mechanism module is used to remotely open and close the circuit
breaker. It is made up of a spring-charging motor equipped with an opening release
and a closing release.
An electrical operation function is generally combined with:
device ON/OFF indication OF
b
"fault-trip" indication SDE.
b
Motor mechanismmodule
Power supply V AC 50/60 Hz 48/60 - 100/130 - 200/240 - 277 - 380/415
V DC
24/30 - 48/60 - 100/125 - 200/250
Operating threshold
0.85 to 1.1 Un
Consumption (VA or W)
180
Motor overcurrent
2 to 3 In for 0.1 second
Charging time
maximum 4 seconds
Operating frequency
maximum 3 cycles per minute
Electrical closing order
The release remotely closes the circuit breaker if the spring mechanism is charged.
Release electrical characteristics are identical to those of an MX release (see
above), the operating threshold is from 0.85 to 1.1 Un and the circuit breaker
response time at Un is 60 ms ±10.
The Compact NS electrical operation function can be used to implement a synchro-
coupling system.
Electrical opening order
The release instantaneously opens the circuit breaker when energised. The supply
can be impulse-type or maintained.
Release electrical characteristics are identical to those of an MX release (see
above).
Electrically operated circuit breakers are equipped as
standard with a motor mechanism module.
Two solutions are available for electrical operation:
b
a point-to-point solution
b
a bus solution with the COM communication option.
In the event of simultaneous opening and closing orders, the
mechanism discharges without any movement of the main
contacts.
In the event of maintained opening and closing orders, the
standard electrical operation solution provides an anti-pumping
function by blocking the main contacts in open position.
Wiring diagram of a point-to-point electrical operation solution
PB104831
Electrically operated Compact NS circuit breaker.
DB128140
A2
B4
A1
A4
OF
COM
SDE
Closing
order
Opening
order
Supervisor
Motor
mechanism
module
DB128141
12 14
11
OF1
82 84
81
SDE
B4
A1
A2
A4
Closed
Open
Fault
Closing
order
Opening
order
Motor
mechanism
module
Wiring diagram of a bus-type electrical operation
solution