| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electromagnet device for immediately tripping a circuit breaker which can avoid delay in an immediate tripping operation even when the current set value for immediate tripping is set high, namely even when the gap width between a stable core and a movable iron piece is wide. <P>SOLUTION: In an electromagnet device for immediately tripping a circuit breaker, an axis of a stable core 71 of each pole is supported by a stable core support member 70. An interlock shaft body 77 has an arm portion 77c which deviates in the direction away from the stable core 71 of each pole according to the rotation of the interlock shaft body 77. A stable core return spring 72 which energizes the stable core 71 in the direction of pressing the stable core 71 to the arm portion 77c is provided between the stable core 71 and the stable core support member 70. The gap width g between the stable core 71 and a movable iron piece 74 is adjusted by the stable core 71 of each pole rotating linked with the rotation of the interlock shaft body 77. <P>COPYRIGHT: (C)2012,JPO&INPIT |
