3WL1220-2DG45-4GN4 SIEMENS

The 3WL1220-2DG45-4GN4 Siemens is a robust and reliable 4-pole withdrawable circuit breaker designed for comprehensive circuit protection in industrial and commercial applications. Compliant with IEC standards, this size II breaker is engineered to handle a rated current (In) of 2000A at up to 690V AC, operating at 50/60Hz. It boasts a high ultimate short-circuit breaking capacity (Icu) of 66kA at 500V, ensuring effective protection against overcurrents. Featuring a rear horizontal connection, the breaker includes an ETU 27 overcurrent release with adjustable LSING protection settings ranging from 0.4 to 1 times the rated current. Integrated ground fault and neutral protection enhance safety and prevent damage from earth leakage. The motorized/manual operating mechanism, equipped with a spring charging motor, supports AC 50/60 Hz 208-240 V or 220-250 V DC activation. It includes a first 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. A second auxiliary release "R", F3 provides undervoltage protection with instantaneous tripping at 208-240 V AC, 220-250 V DC. The breaker is equipped with 4 normally open (NO) and 4 normally closed (NC) auxiliary contacts for enhanced monitoring and control capabilities. This Siemens circuit breaker combines advanced protection features with flexible operation, making it suitable for demanding power distribution systems.