This is a SHT shunt trip release for EasyPact EZC 100 devices. Its rated voltage is from 200VAC 50/60Hz to 277VAC 50/60Hz. It is an auxiliary used for emergency off or remote opening applications. This auxiliary opens the circuit breaker when the control voltage Un rises above 70% of its rated voltage Un. It complies with IEC 60947-2 standard. EasyPact EZC device can be equipped with 1 SHT auxiliary (for 2 poles) or 2 SHT auxiliaries (for 3 and 4 poles).