Main miniature circuit breaker (SHU), 3x 1-pole, E 63A, 230/400 V Mounting on 40 mm busbars The miniature circuit breaker is the fuse for short-circuit protection The miniature circuit breakers from Siemens, as an important component of the SENTRON protective components for electronic installations, provide effective protection for personnel and plants by reliably shutting down in the event of an overload or short-circuit. User-friendly mounting and connection technology, standardized additional components and an integrated design – these are the characteristics of the device family. Whether for infrastructure or for industrial requirements, Siemens provides miniature circuit breakers for all applications and every application area. The Siemens miniature circuit breakers are characterized primarily by: 1. Effective personnel, investment and plant protection against overload and short-circuits. 2. Reliable safety during installation due to standard reach-around and touch protection. 3. Clearly visible switch position indicator. 4. Optimized technology for your safety – only from Siemens. &DPMD_ACC602_001_000_5SP3&