This MicroLogic 4.2 AL is an electronic 3P tripping unit used in 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. MicroLogic 4.2 AL provides a no-tripping differential current alarm available on the terminal strip. MicroLogic 4.2 AL indicates overloads with alarm LEDs. The green Ready LED flashes when the circuit breaker is ready to trip. 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.