To provide an external tripping device of a circuit breaker capable of being attached on the circuit breaker under such condition as the circuit breaker is attached to an attaching rail.
A case 2 of an external tripping device 1 is attached to a breaker body 51 of a circuit breaker 50 in such a manner as to be articulated to the breaker body. In the case 2, there are housed an interlock rod 10 whose one part protrudes from a side surface that faces the breaker body 51 of the circuit breaker 50, to cause a contact point of the circuit breaker 50 to perform off-operation by the protruding portion, and a tripping mechanism which drives the interlock rod 10 so that the contact point of the circuit breaker 50 is off-operated at the time of abnormal voltage of a power source that is supplied to a load through the circuit breaker 50. On a rear surface of the case 2, there is provided a groove, which allows an attaching rail 60 to penetrate, to which the circuit breaker 50 is attached. On a side surface of the case 2 that faces the breaker body 51, a flexible projection 6 is provided. And at a tip end of the projection 6, there is provided a claw 6a which protrudes in normal direction on the rear surface of the case 2, to be hooked on the breaker body 51 of the circuit breaker 50.
SHINOHARA KEIKI
YAMAZOE KOICHI
TANAKA TAKESHI
NAKAMICHI YOSHIYA
| JP2005158443A | 2005-06-16 | |||
| JP2000231869A | 2000-08-22 | |||
| JPS6286900A | 1987-04-21 | |||
| JPH05250977A | 1993-09-28 | |||
| JP2007012434A | 2007-01-18 | |||
| JPS61248321A | 1986-11-05 |
Takeshi Sakaguchi
Hidetoshi Kitade
Nakaishi Haruki
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