| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain an instant tripping device in which, while an adjustment work can be made so as to bring the gap between a moving member and an operating plate close to an initial design value independently for each pole without changing the size of the tripping current, the manufacturing cost can be made reduced, and a dedicated bending jig is not required, and even if the bending work is made in a state of installation in a circuit breaker, the circuit breaker or the movable member is not deformed in an unintended portion, and the bending amount can made to a certain amount or less, preventing adjustment of more than necessary. <P>SOLUTION: In the multi-pole circuit breaker having an instant tripping device 110 which detects excess current generated in an electric path and has instant tripping characteristics, a gap adjusting means which adjusts the gap between a switching mechanism and an operating piece is installed in an operating piece 1111a of an operating member which works so as to operate the switching mechanism 102 interlocked with a movable iron piece constituting the instant tripping device for each pole. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
