This is a MX shunt trip release for Compact NSX, PowerPact Multistandard and EasyPact CVS circuit breakers. Its rated voltage is 220 to 240 VAC 50/60 Hz, or 208 to 277 VAC 60 Hz. 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. This shunt trip is a UL Listed/CSA Certified circuit breaker accessory. Compact NSX, PowerPact Multistandard and EasyPact CVS can be equipped with either 1 MX or 1 MN auxiliary.