This standard MN undervoltage release is used on Compact NSXm and PowerPact B devices.This auxiliary is used for emergency off or failsafe remote tripping applications.It is a one click spring type auxiliary for quick and easy installation, visible from the front face of the device.This MN auxiliary has a 440/480 VAC 60 Hz rated voltage.It trips the circuit breaker when the control voltage drops below 35% of its rated value.It complies with IEC 60947-2 standard.Compact NSXm and PowerPact B embed either 1 MN or 1 MX coil.