3WL1112-2DG72-4GA4-Z C22+F23+K07

The 3WL1112-2DG72-4GA4-Z C22+F23+K07 circuit breaker from Siemens is a robust and reliable 4-pole, fixed-mounted device designed for IEC standards. It is rated for a nominal current (In) of 1250 A and can operate at up to 690 V, 50/60 Hz AC. The circuit breaker boasts a high ultimate breaking capacity (Icu) of 55 kA at 500 V, ensuring effective protection against short-circuit currents. It features a rear horizontal connection for easy and secure installation. Equipped with an electronic trip unit (ETU 27), it offers adjustable LSING protection with a range of 0.4-1 In, allowing for precise customization of overcurrent protection settings. Integrated ground fault and neutral (N) protection further enhance its safety features. The device incorporates 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 and 220 V DC. Additional features include a 1st auxiliary release, a shunt release "F" (F1 50/60 Hz 230 V AC/220 V DC, 100% on-load factor), 4NO+4NC contacts, internal current transformers (F23), and a tripped signaling contact (K07).