配線用遮断器

Japanese Patent JP5426702

B2

A circuit breaker includes a main case (102); a switching mechanism accommodated in the main case, and having a mechanical part for opening and closing a circuit; a trip mechanism configured to trigger the switching mechanism to a circuit interrupting position upon detection of an abnormal current on a circuit; and an external device (140) detachably mounted to the main case, wherein the circuit breaker includes an interrupting means configured to interrupt the switching mechanism by contacting at least a part of the external device when the external device is mounted to the main case. The circuit breaker further includes a latch included in the switching mechanism, and configured to maintain a circuit connected state; a latch holder configured to restrict or release a movement of the latch; and a nail rotatably mounted to the trip mechanism, and configured to restrict or release the latch holder according to a rotation direction, wherein the interrupting means includes a protrusion portion integrally formed at the nail, and a lever formed at the external device. The protrusion portion may be configured to rotate the nail in a releasing direction by contacting the lever when the external device approaches to a mounting position of the main case, and configured not to contact the lever when the external device has been disposed at the mounting position.

Gonbon Gun

JP2012024976A

February 26, 2014

February 08, 2012

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LSIS CO., LTD

H01H73/02

JP6111704A
JP2000003656A
JP6111705A
JP2001060429A
JP2007335275A
JP2011023372A
JP10188770A
JP10321113A
JP2007280777A
JP6333489A

Atsushi Aoki
Jun Tsuruta
Tomohiro Minamiyama
Akira Kawai
Kenichi Nakamura

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