Remotely-operated circuit breaker
    2.
    发明授权
    Remotely-operated circuit breaker 失效
    远程操作电路断路器

    公开(公告)号:US5053735A

    公开(公告)日:1991-10-01

    申请号:US418192

    申请日:1989-10-06

    IPC分类号: H01H89/08

    CPC分类号: H01H89/08

    摘要: A remotely operated circuit breaker comprises a handle which is selectively positioned at one of three operating positions: a handle off position into which the handle is manually positioned to forcibly open the electrical contacts in the circuit breaker; a handle auto position into which the handle is positioned manually so that the electrical contacts are driven to normally open and close by a control mechanism which in turn is controlled by an electromagnetic driving unit response to a remote control voltage applied thereto; and a trip position into which the handle is automatically positioned by the control mechanism and a forcible overcurrent protecting unit to and the electrical contacts are opened rapidly when an overcurrent as well as a short-circuit current flows through the electrical contacts.