INTERLOCKING BREAKING MECHANISM OF CIRCUIT BREAKER

摘要

PROBLEM TO BE SOLVED: To provide an interlocking breaking mechanism of a circuit breaker in which wearing of a latch member due to repetition of trip interlocking is hardly brought about and thereby, possibility of latching of the latch member to the tripping member becoming difficult is prevented. SOLUTION: The trip interlocking member 53 is supported between respective circuit breaker main bodies rotatably and has a first drive part 65 which is driven by a crossbar 3 when the crossbar 3 is rotated in the direction of contact opening and a second drive part 66 opposed to a trip member 24. The rotation center point of the trip interlocking member 53 is made a trip set position 68 for releasing the trip member 24 from the latch member locking state when a handle 9 is at " On" position and is made a On-Off set position that cannot drive the trip member 24 when the handle is at "Off" position. COPYRIGHT: (C)2005,JPO&NCIPI