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    • 2. 发明授权
    • Circuit breaker
    • 断路器
    • US4417222A
    • 1983-11-22
    • US272202
    • 1981-06-10
    • Herrmann SchmittRudolf SellnerKlaus Greefe
    • Herrmann SchmittRudolf SellnerKlaus Greefe
    • H01H73/48H01H71/10H01H71/12H01H71/24H01H71/52H01H75/00H01H77/00
    • H01H71/2409H01H1/2066H01H71/1081H01H71/52H01H71/2463
    • An automatic switch of this type includes a switch latch for interrupting current, an overload tripping device and a short-circuit current tripping device for acting on the switch latch to trigger a current interruption. Generally there is also included at least one main contact device having at least one stationary contact and at least one movable contact, a movably supported contact lever attached to the at least one movable contact, and at least one arc quenching device associated with each main contact device. The improvement according to the invention includes a combination of an additional armature system having a magnet coil, a magnet core, a magnet armature and a striker pin. The striker pin is operable for directly striking the at least one movable contact lever and for lifting the at least one movable contact from the at least one stationary contact for a given limited time in the event of short-circuit currents, and the short-circuit current tripping device is in the form of a selective protection tripping device.
    • 这种类型的自动开关包括用于中断电流的开关闩锁,过载跳闸装置和用于作用在开关闩锁上以触发电流中断的短路电流跳闸装置。 通常,还包括至少一个主接触装置,其具有至少一个固定触点和至少一个可动触头,连接至该至少一个可动触头的可移动支撑的接触杆以及与每个主触点相关联的至少一个灭弧装置 设备。 根据本发明的改进包括具有磁体线圈,磁芯,磁体衔铁和撞针的附加电枢系统的组合。 撞击销可操作用于直接冲击至少一个可动接触杆,并且在短路电流的情况下,在给定的有限时间内将至少一个可移动触点从至少一个固定触点提升,并且短路 电流跳闸装置是选择性保护跳闸装置的形式。