Circuit breaker |
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| 申请号 | JP32653688 | 申请日 | 1988-12-23 | 公开(公告)号 | JPH0249322A | 公开(公告)日 | 1990-02-19 |
| 申请人 | Matsushita Electric Works Ltd; | 发明人 | MATSUDA JUNICHI; AOYAMA YOICHI; | ||||
| 摘要 | PURPOSE: To shorten the time in which an abnormal current flows in a load incl. semiconductor element through an arc by furnishing a connector to connect polar arc runners of circuit breakers having a plurality of poles with each other. CONSTITUTION: Fixed contacts 3, 4 are connected with load terminals 2a, 2b, and movable contacts 5, 6 of movable contact pieces 7, 8 to be connected with power terminals 12, 13 are put in contact with these fixed contacts 3, 4. An arc extinguishing device 17 to extinguish arc generated between the fixed contacts 3, 4 and movable contacts 5, 6 is installed between an arc horn 14 connected on the power terminals 12, 13 side and an arc runner 16 having an arc hop-over part 15 arranged near the fixed contacts 3, 4. The arc runners 16 of the poles are connected by respective connectors 18. The connectors 18 are formed from a conductive plate and coupled together by a screw 22 so as to shortcircuit the arc runners 16 between. This can shorten the time in which an abnormal current flows through the load 1 incl. semiconductor element through an arc. COPYRIGHT: (C)1990,JPO&Japio |
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| 权利要求 | |||||||
| 说明书全文 | |||||||
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