| 摘要 |
PROBLEM TO BE SOLVED: To provide a low-cost operation unit structure of a circuit breaker whose on/off state is made easy to be confirmed with a power distribution board fitted at a given position, and is easy to be visually recognized even by a resident with weak eyesight, even in case a plurality of ones are installed together in the distribution board. SOLUTION: In the operation unit structure, an operating member with a part protruded outside a main body 1 constituting the circuit breaker is structured of a first operating member 21 and a second operating member 22, which 21, 22 are coupled each with a rotating member 5 arranged inside the main body 1 in free movement between an on-state and an off-state of the circuit breaker, coupled by the rotating member 5 a link 6, and through the link 6, and drives a latch member 7 operating in interlocking with a rotating operation of the rotating members 21, 22 and a crossbar 8 interlocking with the latch member 7. A movable contactor 31 supported by the crossbar 8 and fixed contactor arranged in opposition to the movable contactor 31 are forcibly made in and out of contact with each other. COPYRIGHT: (C)2008,JPO&INPIT
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