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Teaton Electric Co., Ltd.

Mobile: 008618355368712

Whats App: 0086 183 553 68712

Add: B Block, New Metropolis, Jinghu Century Town, Jinghu District, Wuhu City, Anhui Province, China

Zip Code: 241000


Difference between a shunt and undervoltage trip for circuit breaker

Undervoltage tripping, combined with an emergency-off button, provides fail-safe tripping. The MN release is continuously supplied, i.e. if supply is interrupted:

either voluntarily, by the emergency-off button, or accidentally, through loss of power or faulty wiring,
the release provokes opening of the circuit breaker.
MX shunt release
The MX release opens the circuit breaker via an impulse-type (u 20 ms) or maintained order.
Opening conditions:
When the MX release is supplied, it automatically opens the circuit breaker. Opening is ensured for a voltage U u 0.7 x Un.