Circuit breaker 10kA, 3-pole, C, 30 A according to UL 489-480Y/277V The miniature circuit breaker is the fuse for short-circuit protection. The miniature circuit breakers from Siemens are an important element of the SENTRON protective components for electronic installations and 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 are the key features of this 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. A wide variety of standardized accessories, easy to install and replaceable at any time. 3. Reliable safety during install