This MicroLogic 5.2 E (Energy) electronic trip unit is a 3-pole 3d trip unit used with ComPacT NSX 100/160/250 circuit breakers. This electronic trip unit with a rating of 40 A is an optimal choice for all standard and special applications. It has an adjustable long-term protection against overload. It also offers an adjustable short-time delayed short-circuit protection and an instantaneous short-circuit protection. MicroLogic 5.2 E indicates overloads with alarm LEDs. The green Ready LED flashes when the circuit breaker is ready to trip. MicroLogic 5.2 E is equipped with a display module that enables energy measurements and allows fine adjustment. This product is part of our EcoStruxure Power architecture when combined with the PowerTag NSX and ComPacT NSX basic switch.