3VL4740-3SE36-0AA0 SIEMENS

The 3VL4740-3SE36-0AA0 is a high-performance molded case circuit breaker (MCCB) 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 short-circuit breaking capacity (Icu) of 100kA at 415V AC, making it suitable for demanding electrical environments. The breaker features an electronic trip unit ETU20, providing advanced protection and monitoring capabilities. The ETU20 offers adjustable long-time (overload) protection (L), short-time (short-circuit) protection (S), and instantaneous (instantaneous short-circuit) protection (I). 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 value. This model does not include an auxiliary release or auxiliary/alarm switch, focusing on core circuit protection functionality. Its robust design and advanced features make it a dependable choice for safeguarding electrical systems.