| 摘要 |
PROBLEM TO BE SOLVED: To provide a circuit breaker to which an auxiliary device is easily fitted. SOLUTION: When a trip unit is operated, a latch axis 37 rotates and a trip indication arm 37c protrudes to operate an alarm switch. When a lacked voltage pull-out device is operated, a trip device relay lever 55 turns so that a trip access is turned to operate a trip unit. When the trip unit is reset, the latch axis 37 turns for return, so that the lacked voltage pull-out device is also reset by a trip device rest arm 37d.
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