Compact molded case circuit breaker with movable contact arm rebound
cushion
    2.
    发明授权
    Compact molded case circuit breaker with movable contact arm rebound cushion 失效
    紧凑型塑壳断路器,带可动接触臂回弹垫

    公开(公告)号:US5089795A

    公开(公告)日:1992-02-18

    申请号:US610758

    申请日:1990-11-08

    摘要: A compact molded case circuit breaker with increased ampere rating employs a latch assembly for maintaining the circuit breaker operating mechanism in a closed condition against a pair of powerful operating springs. To increase the mechanical advantage required to move the operating handle against the springs, a retractable handle extender is attached to the handle. For higher-rated circuit applications, a lug cover extension is added to the line end of the breaker to assist in extinguishing the intense arc that occurs during circuit interruption and to protect the line lugs from inter-phasal circuit faults. A visual access slot is arranged next to the circuit breaker handle to ascertain and verify the condition of the circuit breaker contacts. A rebound cushion is inserted on the interior surface of the circuit breaker cover to deter the return of the movable contact arm during contact separation under extreme overcurrent conditions.

    摘要翻译: 具有更高安培额定值的紧凑型塑壳断路器采用闩锁组件,用于将断路器操作机构保持在处于闭合状态的一对强力操作弹簧。 为了增加将操作手柄相对于弹簧移动所需的机械优点,可伸缩手柄延伸器附接到手柄。 对于更高额定电路应用,在断路器的线路端增加一个接线片延伸部分,以帮助消除电路中断期间发生的强电弧,并保护线路接头不会发生相间电路故障。 断路器手柄旁边设有一个可视通道,以确定和验证断路器触点的状态。 在断路器盖的内表面插入回弹垫,以防止在极端过电流条件下的接触分离期间可动接触臂的返回。

    Molded case circuit breaker with contact status indicating handle
    10.
    发明授权
    Molded case circuit breaker with contact status indicating handle 失效
    带接触状态指示手柄的塑壳断路器

    公开(公告)号:US4796154A

    公开(公告)日:1989-01-03

    申请号:US060576

    申请日:1987-06-11

    IPC分类号: H01H71/04 H01H71/52 H02B1/08

    摘要: An integrated electronic trip molded case circuit breaker includes a trip unit circuit arranged on a printed wire board contained within the breaker enclosure along with at least one circuit breaker auxiliary accessory. The condition of the integrated circuit breaker contacts is visually ascertained by a color-coded operating handle skirt subjacent indicating windows on the cover of the circuit breaker enclosure. To deter the egress of ionized gas during overload current conditions through the circuit breaker, the handle skirt seals the operating handle opening from the external environment. A groove formed within the external portion of the operating handle cooperates with an edge surface of the enclosure cover to allow the operating handle to rotate between its fully "OFF" and "ON" positions.

    摘要翻译: 集成的电子跳闸塑壳断路器包括布置在包含在断路器外壳内的印刷线路板上的跳闸单元电路以及至少一个断路器辅助附件。 集成断路器触点的状况通过位于断路器外壳的盖上的指示窗口下方的颜色编码的操作手柄裙部目视确定。 为了在通过断路器的过载电流条件下阻止离子化气体的流出,手柄裙将操作手柄开口与外部环境密封。 形成在操作手柄的外部部分中的凹槽与外壳盖的边缘表面配合,以允许操作手柄在其完全“断开”和“打开”位置之间旋转。