3WL1112-2CB45-4GA2 SIEMENS

The 3WL1112-2CB45-4GA2 Siemens is a robust and reliable 4-pole withdrawable circuit breaker designed for comprehensive circuit protection. Compliant with IEC standards, this size I breaker is engineered to handle a rated current (In) of 1250A at voltages up to 690V AC, operating at 50/60Hz. It boasts a high ultimate short-circuit breaking capacity (Icu) of 55kA at 500V, ensuring effective protection against overcurrents. Featuring a rear horizontal connection, the breaker is equipped with an ETU 25 overcurrent release, offering adjustable LSI (Long-Short-Instantaneous) protection settings ranging from 0.4 to 1 times the rated current. The motorized/manual operating mechanism includes a spring charging motor compatible with AC 50/60 Hz 208-240 V or 220-250 V DC, alongside an activation system for AC 50/60 Hz 230 V and 220 V DC. It incorporates a 1st auxiliary release with a shunt release "F", F1 rated for 50/60 Hz 230 V AC/220 V DC with a 100% on-load factor. The breaker is configured with 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts, enhancing its monitoring and control capabilities. This model does not include a 2nd auxiliary release, focusing on streamlined functionality.