| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily execute a test trip without actually supplying an overcurrent nor using an optional voltage release device only by making simple alteration of a circuit breaker. <P>SOLUTION: A circuit breaker (for example, a circuit protector) constituted by mounting a opening/closing mechanism 4, a handle 5, and an electromagnetic type release device 7 in an exterior case 1 is provided with a test trip jig 9, which is inserted into the exterior case 1 from outside to press an armature 7a into a trip position, as an accessory component of the circuit breaker, and a jig insertion hole 1a into which the jig is inserted is provided in the exterior case 1. The test trip jig 9 is a lever plate which has a tongue piece-like operation piece 9a bent and formed in a dogleg shape at a tip, and the exterior case 1 has the slit jig insertion hole 1a bored opposite the armature 7a of the electromagnetic type release device 7. <P>COPYRIGHT: (C)2012,JPO&INPIT |
