This Micrologic 1.3 M is a 4 poles 3d electronic trip unit used on Compact NSX 630 circuit breakers.This 500A rating electronic trip unit is an optimum choice for motor protection applications.It provides an adjustable short-time protection and a fixed instantaneous protection against short-circuits.The green Ready LED flashes if the circuit breaker is ready to trip.This product is part of our EcoStruxure Power architecture if associated with PowerTag NSX and Compact NSX basic frame.