CHINT MCCB Accessories (Shunt Trip / Aux Contact / Alarm Contact / AL + Aux / Handle / UVT) for NXM-160 / NXM-250 / NXM-400/630 / NXM-800

SHT shunt release (240 V)
Function: Shunt release is an accessory for remote control.
The shunt release shall be able to make circuit breaker operating reliably when the power voltage equals to any voltage within the range of 70%~110% of rated control power voltage.

Auxiliary Contact
Remotely indicate the circuit breaker’s making (on) or breaking / tripping (OFF) status, connected to the auxiliary circuit of the circuit breaker.

Alarm Contact
It is mainly used to provide a signal when the load of the circuit breaker is overloaded, short-circuited or undervoltage, or tripped. The reasons for the failure of the alarm signal are Over-load or short-circuit Undervoltage trip Residual current action trip Manual free trip.

UVT Under-Voltage Release (415 V)
Realize the under-voltage protection function of the circuit breaker, open the circuit breaker when the power supply voltage is too low, and protect the electrical equipment. When the supply voltage drops (even slowly) to 70% to 35% of the rated control supply voltage, the under voltage, the undervoltage trips, the breaker should open the circuit breaker reliably. When the supply voltage is equal to or greater than 85% of the rated control supply voltage of the undervoltage release, the circuit breaker should be guaranteed to close. When the supply voltage is less than 35% of the rated control supply voltage of the undervoltage release, the undervoltage release should prevent the circuit breaker.

Model Selection:
M1-for NXM-125S NXM-125H
M2-for NXM-160S NXM-160H
M3-for NXM-250S NXM-250H
M4-for NXM-400S NXM-630S