This Micrologic 5.3 A (Ammeter) is a 4 poles 4d electronic trip unit used on Compact NSX 400/630 circuit breakers.This 400A rating electronic trip unit is an optimum choice for all standard and specific applications.It embeds adjustable long time protection against overloads.It provides also adjustable short-time protection and instantaneous protection against short-circuits.Micrologic 5.3 A indicates overloads with Alarm LEDs.The green Ready LED flashes if the circuit breaker is ready to trip.Micrologic 5.3 A is equipped with a display module that gives current measurement and allows fine adjustment settings.This product is part of our EcoStruxure Power architecture if associated with PowerTag NSX and Compact NSX basic frame.