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    • 4. 发明授权
    • Apparatus for interrupting a short circuit in a circuit breaker
    • 用于中断断路器短路的装置
    • US06952149B2
    • 2005-10-04
    • US10436643
    • 2003-05-13
    • Ronald CiarciaAnanthram SubramanianMacha NarenderLuis BrignoniSamuel Kim
    • Ronald CiarciaAnanthram SubramanianMacha NarenderLuis BrignoniSamuel Kim
    • H01H77/10H01H75/00
    • H01H1/2058H01H77/108
    • A circuit breaker includes a housing, an operating mechanism, and a cassette. The cassette includes a separable current path having a movable contact arm, two arc receptors each disposed for receiving an electrical arc in response to a short circuit overcurrent condition, and two slot motors each disposed proximate the movable contact arm for magnetically driving the movable contact arm to a blown open position in response to a short circuit overcurrent condition. The slot motors each have two side legs opposing each other and defining a space therebetween for receiving the movable contact arm, each side leg having a magnetic core and an insulative layer and being biased toward the interior of the side walls of the cassette, wherein each side leg is restrained from being magnetically attracted toward the movable contact arm during a short circuit condition.
    • 断路器包括壳体,操作机构和盒。 磁带盒包括具有可移动接触臂的可分离电流路径,每个电弧接收器被设置成响应于短路过电流条件而接收电弧,以及每个设置在可动接触臂附近的两个槽电机,用于磁力驱动可动接触臂 响应于短路过电流状态而处于吹开位置。 槽式电动机各自具有彼此相对的两个侧腿,并且在它们之间限定了用于接收可动接触臂的空间,每个侧腿具有一个磁芯和一个绝缘层,并被朝着盒的侧壁的内部偏置,其中每个 在短路状态下,侧腿不受磁力吸引到可动接触臂。