3VL4740-1UM36-0AA0 SIEMENS

The 3VL4740-1UM36-0AA0 is a robust 3-pole circuit breaker from Siemens, designed for reliable line protection in electrical systems. It features a standard breaking capacity of Icu=55kA at 415V AC, ensuring effective interruption of fault currents. Equipped with an LCD ETU42 trip unit, this circuit breaker offers advanced protection functionalities. The LSIG protection function (Long-time, Short-time, Instantaneous, Ground fault) is configurable for 3 phases/4 lines, providing comprehensive protection against various fault conditions. A connecting cable is included for easy installation and integration. The rated current (In) is 400A, with an adjustable overload protection range (IR) from 160A to 400A, allowing customization to specific load requirements. The short-circuit protection (ISD) can be set from 1.5 to 10 times the IR value, and the instantaneous short-circuit protection (II) is fixed at 11 times the In value. This model does not include an auxiliary release or auxiliary/alarm switch, focusing on core circuit protection functions. It is suitable for applications requiring dependable and adjustable circuit protection.