This MicroLogic 5.2 AZ 3-pole 3d electronic trip unit is an electronic trip unit for ComPacT NSX 250 circuit breakers. This electronic trip unit with a rated capacity of 250 A is used in special 2/3 distribution systems at 16 Hz for railway 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 AZ indicates overloads with alarm LEDs. The green Ready LED flashes when the circuit breaker is ready to trip. MicroLogic 5.2 AZ is equipped with a display module that provides current measurements and allows fine adjustments. This product is part of our EcoStruxure Power architecture when combined with the PowerTag NSX and ComPacT NSX basic switch.