This MicroLogic 4.2 4d electronic trip unit is a 4-pole 4D trip unit used on the Compact NSX 100/160/250 circuit breakers. This electronic trigger with a nominal power 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-term protection and a fixed instantaneous short-circuit protection. The MicroLogic 4.2 Vigi release unit offers an integrated, adjustable differential current protection. MicroLogic 4.2 indicates overloads with alarm LEDs. The green Ready LED flashes when the circuit breaker is ready to trip. A differential current pre-alarm can be available remotely by installing the optional SDX module (LV429532). This product is part of our EcoStruxure Power architecture, provided it is combined with the PowerTag NSX and Compact NSX Basic Switch.This text is machine translated.