Miniature circuit breaker 10kA, 3-pole, D, 20A according to UL 489-480Y/277V The miniature circuit breaker is the automatic circuit breaker for short-circuit protection. The miniature circuit breakers from Siemens, as an important component of the SENTRON protection components for electrical installations, offer effective protection for people and systems by safely switching off in the event of overload and short circuit. Convenient installation and connection technology, uniform additional components and a consistent design - these are the hallmarks of the device family. Whether for infrastructure or industrial requirements, Siemens offers miniature circuit breakers for all applications and every area of use. The Siemens miniature circuit breakers are characterized above all by: 1. Effective protection for people, investments and systems against overload and short circuit. 2. A wide range of uniform accessories that are easy to install and can be replaced at any time. 3. Reliable safety during installation thanks to the standard anti-reach and touch protection. 4. Clearly visible switch position indicator. 5. Data matrix code on the front of the device provides all information about the circuit breaker quickly and easily. 6. Standard-compliant protection with worldwide approvals.