| 摘要 |
In order to prevent a mistrip caused by a closing operation by a toggle mechanism, a trip lever 23 is not mounted on a fixed frame of a mechanism portion 8, but is mounted on a yoke 30 of a disengaging device 9 serving as a support base for this trip lever. The mechanism portion 8 and the disengaging device 9 are held on a common casing 10, and therefore an impact force, produced at the time of closing the contact between two contacts 2 and 3 by the toggle mechanism, is not completely prevented from being transmitted to the trip lever 23, while this impact force is transmitted through the casing 10, and therefore is far smaller as compared with the case where the trip lever 23 is supported on the fixed frame 13, so that such a mistrip can be prevented.
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