Eaton faz series miniature circuit breakers c type single pole eaton 278549 this single pole c type miniature circuit breaker from the eaton faz series is ideal for use where operational current peaks and other surges occur that must not lead to tripping it is particularly suitable for use with switchgear in industrial and advanced commercial operations eaton 278549 faz c21 miniature circuit breaker 2a c type sp 15ka