3VL7712-3ME36-0AA0 SIEMENS

The 3VL7712-3ME36-0AA0 is a high-performance circuit breaker from Siemens, designed for line protection in demanding electrical systems. This 3-pole circuit breaker is part of the VL1250L series, known for its very high breaking capacity, specifically an Icu of 100kA at 415V AC. It features an electronic trip unit (ETU20) that provides advanced protection and control capabilities. The ETU20 offers LSI (Long-time, Short-time, Instantaneous) protection functions, ensuring comprehensive protection against overloads and short circuits. The circuit breaker has a rated current (In) of 1250A, with an adjustable overload protection range (IR) from 500A to 1250A. The short-time delay protection (ISD) can be adjusted from 1.5 to 9 times the IR setting, allowing for precise coordination with other protective devices. The instantaneous short-circuit protection (II) is fixed at 10 times the In setting, providing rapid response to high-level faults. This model does not include an auxiliary release but is communication-capable, enabling integration into modern energy management systems. It also does not have an auxiliary/alarm switch.