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    • 7. 发明授权
    • Bipolar protective switch
    • 双极保护开关
    • US4206430A
    • 1980-06-03
    • US891389
    • 1978-03-29
    • Arthur RuschJosef Flory
    • Arthur RuschJosef Flory
    • H01H71/08H01H71/24H01H73/52H01H83/12H01H83/00H01H73/48H01H75/12
    • H01H71/08H01H71/2463H01H73/52H01H83/12H01H2083/208
    • A bipolar protective switch has a two-piece housing. An electromagnet constitutes the actuating device made either in the form of a zero voltage actuator or an excess current actuator. The armature of the electromagnet drops in the event of a voltage failure or is attracted if an excess current appears, thus disconnecting the switch. The switch can be turned back on again only after the voltage returns or normal current returns by the actuating device. A rocker is disposed on the narrow upper surface between the two pieces of the housing as the actuating member. The electromagnet and connecting members are disposed on the underside of the housing, a portion of the electromagnet being located between the two pieces of the housing. A support of an insulating material, is disposed in the housing upon which support connecting members are disposed. Two fixed contact members located side by side and two movable contacts, as well as a lever which is common to the two movable contacts is swivelable, and is subject to the force of a spring, the lever being connected to the rocker by a yoke. The lever is lockably connected with one arm of a two-armed release lever disposed on the support, the other arm being effectively connected with a release rod of the electromagnet.
    • 双极保护开关具有两件式外壳。 电磁体构成以零电压致动器或过电流致动器的形式制造的致动装置。 电磁铁的电枢在发生电压故障的情况下会下降,或者如果出现过电流而被吸引,则断开开关。 仅当电压恢复或致动装置正常的电流返回后,才能再次打开开关。 作为致动构件,摇臂设置在两个壳体之间的窄上表面上。 电磁体和连接构件设置在壳体的下侧,电磁体的一部分位于两个壳体之间。 绝缘材料的支撑件设置在壳体中,支撑连接构件设置在该壳体上。 并联的两个固定接触构件和两个可动触点以及两个可动触点共用的一个杆是可旋转的,并且受到弹簧的作用,杆通过一个轭连接到摇臂上。 杠杆与设置在支撑件上的双臂释放杆的一个臂可锁定连接,另一个臂与电磁体的释放杆有效连接。