3VL3720-3SE36-0AA0 SIEMENS

The 3VL3720-3SE36-0AA0 is a high-performance circuit breaker from Siemens, designed for line protection in electrical systems. This 3-pole circuit breaker is part of the VL250L series, known for its very high breaking capacity. It boasts an ultimate short-circuit breaking capacity (Icu) of 100kA at 415V AC, ensuring reliable protection against high fault currents. The breaker features an Electronic Trip Unit ETU20, providing advanced protection and control capabilities. The ETU20 offers LSI (Long-time, Short-time, Instantaneous) protection functions, allowing for precise customization of protection settings. The In value is 200A, with an adjustable rated current (Ir) range of 80 to 200A for overload protection. 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. It is suitable for applications requiring robust and dependable circuit protection.