Retaining means for operating handle of molded-case electric circuit breaker
    3.
    发明授权
    Retaining means for operating handle of molded-case electric circuit breaker 失效
    模具电路断路器操作手柄的保持手段

    公开(公告)号:US3629529A

    公开(公告)日:1971-12-21

    申请号:US3629529D

    申请日:1970-02-25

    Applicant: SQUARE D CO

    Inventor: DIETZ ROBERT E

    CPC classification number: H01H9/286

    Abstract: The portion of a circuit breaker casing defining an opening for a pivotable operating handle is provided with a pair of grooves respectively disposed on opposite sides of the opening adjacent an ON position of the handle and extending transversely of the direction of movement of the handle. A retaining means provided on the handle includes a pair of pivotally mounted locking members having end portions insertable respectively in the grooves to lock the handle in ON position while it is being biased toward OFF position by the internal operating mechanism of the circuit breaker.

    Electric circuit breaker having remotely operable contact arm carrier latching means
    4.
    发明授权
    Electric circuit breaker having remotely operable contact arm carrier latching means 失效
    具有远程操作的电气断路器与ARM CARRIER LATCHING手段接触

    公开(公告)号:US3601724A

    公开(公告)日:1971-08-24

    申请号:US3601724D

    申请日:1969-11-18

    Applicant: SQUARE D CO

    CPC classification number: H01H83/20

    Abstract: Latching means for holding the movable contact arm carriers of a multipole molded-case electric circuit breaker in an open or OFF position while the operating handle is held in an ON position. The latching means is electrically operable from a remote point to release the contact arm carriers and allow them to move to ON position toward which they are biased by a spring of a toggle mechanism when the operating handle is in ON position.

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