Trip Coils NS

MX or MN trip coils are used for remote tripping of the circuit breaker. They are mainly used for remote disconnections and emergency stop commands and interruptions.
MN undervoltage trigger
Undervoltage trigger MN trips the circuit breaker when supply voltage falls below 35 % of its nominal voltage Un.
Under voltage trigger combined with emergency button ensures fail-safe disconnection. MN coil is constantly activated i.e. if the current is broken:
- either intentionally, in the event of emergency stop
- or unintentionally, by e.g. drop in voltage, the coil immediately trips the circuit breaker.
MX shunt release
MX shunt release opens the circuit breaker via a pulse (= 20 ms) or continuous signal.
Conditions for opening:
When the MX coil is activated, it automatically trips the circuit breaker. Trip is ensured for a voltage of U > 0.7 x Un.