Takyoku-gata circuit breaker

摘要

PROBLEM TO BE SOLVED: To provide a multipole type circuit breaker unit that copes with only one type although arrangement of terminal fittings for neutral pole electric path is different depending on the domestic market type and overseas market type in a three-phase four wire circuit breaker unit.;SOLUTION: The multipole type circuit breaker has a neutral pole switching operation part 3 capable of manual operation at a control part 13 for carrying out a tripping operation or the like, and by operation of this neutral pole switching operation part 3, the designation of the terminal fittings designated for the neutral pole out of the terminal fittings, can be switched over to the designation of other terminal fittings to carry out an operation process.;COPYRIGHT: (C)2010,JPO&INPIT