| 摘要 |
PCT No. PCT/EP96/05432 Sec. 371 Date Jun. 11, 1998 Sec. 102(e) Date Jun. 11, 1998 PCT Filed Dec. 5, 1996 PCT Pub. No. WO97/23888 PCT Pub. Date Jul. 3, 1997A load switch has a housing, a pair of main contacts fixed in the housing, and a movable main contact pivotal on the housing between end positions in each of which it engages a respective one of the fixed contacts and through a middle position in which it engages neither of the fixed contacts. A central shaft extending along an axis and pivotal in both directions thereabout carries a cam having offset from the axis a cam formation. A mechanical link engaged between the cam formation and the movable contact can pivot it between its end positions and through its middle position on rotation of the cam about the axis.
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