Functions of moulded case circuit breaker accessories

Date:2025年9月8日

Moulded case circuit breaker has many kinds of auxiliary accessories, usually the most used is the shunt release, under-voltage release, these two are external accessories, need to be installed into the moulded case circuit breaker inside, moulded case circuit breaker itself with delayed release and instantaneous release function.
Function of shunt excitation disconnector: it can control the circuit breaker opening from a distance.
Function of undervoltage tripper: When the voltage is less than the rated voltage 70%-35%, the tripper will break the circuit breaker. Moulded case circuit breaker has many kinds of auxiliary accessories, usually the most used is the shunt release, under-voltage release, these two are external accessories, need to be installed inside the moulded case circuit breaker, moulded case circuit breaker itself with delayed release and instantaneous release function.
Function of shunt excitation disconnector: it can control the circuit breaker opening from a distance.
Function of undervoltage tripper: When the voltage is less than the rated voltage 70%-35%, the tripper will break the circuit breaker.

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