3WL1220-2CB32-1AA2 SIEMENS

The 3WL1220-2CB32-1AA2 is a robust and reliable fixed-mounted circuit breaker from Siemens, designed for demanding power distribution applications. This 3-pole circuit breaker, conforming to IEC standards, offers exceptional performance and protection. With a size II frame, it is suitable for systems with a rated current (In) of 2000A and operating voltages up to 690V AC at 50/60Hz. The circuit breaker boasts a high ultimate short-circuit breaking capacity (Icu) of 66kA at 500V, ensuring effective fault interruption. It features a rear connection, oriented horizontally for convenient installation within switchgear assemblies. Equipped with an ETU 25 overcurrent release, it provides comprehensive LSI (Long-Short-Instantaneous) protection, adjustable from 0.4 to 1 times the rated current (In). The manual operating mechanism with storage capabilities allows for reliable switching operations. This model includes a mechanical request function, enhancing operational safety and control. It is configured without 1st and 2nd auxiliary releases but incorporates 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts for signaling and control purposes.