Yuco YC-5-2B Supplemental Protector Din Rail Miniature Circuit Breaker 2P 5A B Curve TUV UL 1077 European Design CSA C22.2 Yuco miniature circuit breaker Din rail B curve, 2 Pole 5 Amps, 120/277v, 50/60 Hz TUV UL 1077 European design CSA C22.2