3WL1112-3DG45-4GN4 SIEMENS

The 3WL1112-3DG45-4GN4 Siemens is a withdrawable circuit breaker designed for robust circuit protection and control. This 4-pole breaker, conforming to IEC standards, has a size I frame and is rated for an In=1250A current up to 690V AC at 50/60Hz. It boasts a high interrupting capacity of Icu=66kA at 500V, ensuring reliable performance under fault conditions. The rear connection is horizontal, simplifying installation within compatible switchgear. Equipped with an ETU 27 overcurrent release, it offers adjustable LSING protection with settings ranging from 0.4 to 1 times the rated current. Ground fault and neutral protection are integrated, enhancing safety and system reliability. The breaker features a motorized/manual operating mechanism with a spring charging motor, compatible with AC 50/60 Hz 208-240 V or 220-250 V DC. Activation is supported by AC 50/60 Hz 230 V, 220 V DC. It includes a 1st auxiliary release (Shunt release "F", F1 50/60 Hz 230 V AC/220 V DC, 100% on-load factor) and a 2nd auxiliary release ("R", F3 Undervoltage, instant. 208-240 V AC, 220-250 V DC), along with 4NO+4NC auxiliary contacts for comprehensive monitoring and control capabilities.