Frequently asked questions
Are the communicating shunt trip and close coils for the Masterpact continuous duty or momentary?
28 September 2021Issue:
Is the communicating shunt trip and close coil for the Masterpact continuous-duty or momentary?
Constant voltage must be supplied to terminal C3.
Voltage may be applied continuously to terminal C2, but the plunger will only extend for 0.5 seconds and then retract.
The coil may be operated via Modbus commands, but operation will also only be momentary. It is not possible to keep the coil energized with Modbus.