PURPOSE: To provide a circuit breaker capable of easily connecting or removing control circuit electric wires from a lead wire terminal board while external conductors are connected to main circuit terminals.
CONSTITUTION: A circuit breaker is provided with a circuit breaker case 1, main circuit terminals 3 opened on the case surface 101 and the case end face 102 at the end section of the circuit breaker case 1, and a lead wire terminal board 4A for an accessory device at the tip of lead wires 7 guided on the side face of the circuit breaker case 1. The lead wire terminal board 4A is arranged on the case end face 102 to the case fitting face 103 side from the main circuit terminals 3, one end of the lead wire terminal board 4A is rotatably fitted to the end section of the circuit breaker case 1 in the direction apart from the case end face 102, and the other end rotating side is fixed at the position kept in contact with the case end face 102.
YAMAGATA NOBUJI
YABE TOSHIYUKI
YAMASAKI SHINSAKU
IIO TSUKASA
KOBAYASHI YOSHIAKI
HOSOGAI SETSUO
FUJIWARA KOHEI
MURATA SHIRO
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