配はい線せん用よう遮しゃ断だん器きはいせんようしゃだんきじ字FuriganaMeanings1nounmolded-case circuit breaker; MCCBelectricity / electronics›Technical term in electrical engineering. Refers to a specific type of circuit breaker used in low-voltage distribution systems.配はい線せん用よう遮しゃ断だん器きは、過か負ふ