3VL4740-3ME36-0AA0 SIEMENS

The 3VL4740-3ME36-0AA0 is a high-performance circuit breaker from Siemens, designed for line protection in industrial and commercial applications. This 3-pole circuit breaker is part of the VL400L series, known for its very high breaking capacity, ensuring reliable protection against overcurrents and short circuits. It boasts an ultimate breaking capacity (Icu) of 100kA at 415V AC, making it suitable for demanding electrical environments. The breaker features an ETU20 trip unit, providing advanced protection and control capabilities. The ETU20 offers LSI (Long-time, Short-time, Instantaneous) protection functions, allowing for precise adjustment of protection parameters. The rated current (In) is 400A, with an adjustable overload protection range (IR) from 160A to 400A. 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. This model is communication-capable, enabling integration into a smart grid or energy management system. Note that this particular model does not include an auxiliary or alarm switch.