ELECTRONIC CIRCUIT BREAKER WITH PHYSICAL OPEN-CONTACT CONSTRUCTION AND FAIL-SAFE PROTECTION WITH DISABLING FEATURE

    公开(公告)号:EP3700037A1

    公开(公告)日:2020-08-26

    申请号:EP19219530.3

    申请日:2019-12-23

    摘要: A circuit breaker includes contacts movable between a closed position wherein a line terminal and a load terminal are in electrical communication, and an open position wherein the line and the load terminals are electrically isolated. A primary trip coil and a secondary trip coil are connected to the contacts, each causing the contacts to move from the closed position to the open position when activated, thereby tripping the breaker. A monitoring circuit, upon a determination being made that the breaker is not operating within acceptable trip parameters, causes activation of the primary trip coil, and, upon a determination being made that the breaker is not operating within acceptable disable parameters, causes activation of the secondary trip coil. The breaker is user resettable if the breaker has been tripped by the primary trip coil, but is not user resettable if the breaker has been tripped by the secondary trip coil.

    ELECTRONIC CIRCUIT BREAKER WITH PHYSICAL OPEN-CONTACT CONSTRUCTION AND FAIL-SAFE PROTECTION

    公开(公告)号:EP3561979A1

    公开(公告)日:2019-10-30

    申请号:EP18210754.0

    申请日:2018-12-06

    IPC分类号: H02H3/05 H01H83/20 H02H3/10

    摘要: A circuit breaker (10, 10', 10'', 10''', 10'''') includes main contacts (11) movable between closed and open positions such that a line terminal and a load terminal are, respectively, in electrical communication or electrically isolated. A trip coil (32) is connected to the contacts, causing the contacts to move from the closed position to the open position in response to a trip current, thereby tripping the circuit breaker. A normally closed relay (22) having a relay activating circuit (24) and a switching circuit (28) is provided, with the switching circuit being electrically connected to the trip coil. A monitoring circuit (20) is electrically connected to the relay activating circuit, supplying activating power to the relay activating circuit so long as a determination is made that the breaker is operating within acceptable parameters, and ceasing to supply activating power to the relay activating circuit upon a determination being made that the breaker is not operating within acceptable parameters, thereby tripping the breaker.

    Thermal switch/breaker
    4.
    发明公开
    Thermal switch/breaker 失效
    Thermischer Schalter / Ausschalter。

    公开(公告)号:EP0496643A1

    公开(公告)日:1992-07-29

    申请号:EP92300656.3

    申请日:1992-01-27

    IPC分类号: H01H73/30

    CPC分类号: H01H73/26 H01H73/303

    摘要: An electric rocker switch has a thermally responsive moveable contact element (16) that is mechanically closed against the fixed contact (14), but moves by bimetallic thermal action to open when an overcurrent condition exists. A trip flag (30) also moves between the open contacts (14,18) whenever the switch rocker is moved to OFF, and will remain in this position even if the rocker is held ON, if the bimetallic element (16) has caused the flag (30) to move between the contacts (14,18). Trip-free operation is thereby achieved. A spring (32) acts on the trip flag (30) to provide a positive snap action as the flag (30) moves between the contacts. The same spring (32) holds the rocker ON, and serves to hold the flag (30) lightly against the movable contact (18) in the switch ON condition.

    摘要翻译: 电动摇臂开关具有热反应性可动接触元件(16),其被机械地关闭固定触点(14),但是当存在过电流状况时,通过双金属热作用移动以打开。 每当开关摇杆移动到OFF时,跳闸标志(30)也在打开的触点(14,18)之间移动,并且即使摇杆被保持在ON,它也将保持在该位置,如果双金属元件(16)已经引起 标志(30)在触点(14,18)之间移动。 从而实现无行程操作。 当标志(30)在触点之间移动时,弹簧(32)作用在跳闸标志(30)上以提供正的快速动作。 相同的弹簧(32)将摇杆接通,用于在开关接通状态下轻轻地将标记(30)保持在可动触点(18)上。