• 专利标题: Electrical switching apparatus comprising an improved arc-quenching device
  • 申请号: US16759216
    申请日: 2018-07-31
  • 公开(公告)号: US11127542B2
    公开(公告)日: 2021-09-21
  • 发明人: Robert KralikDaniel Hammerl
  • 申请人: Schaltbau Gmbh
  • 申请人地址: DE Munich
  • 专利权人: Schaltbau Gmbh
  • 当前专利权人: Schaltbau Gmbh
  • 当前专利权人地址: DE Munich
  • 代理机构: Kilpatrick Townsend & Stockton LLP
  • 优先权: DE102017125260.6 20171027
  • 国际申请: PCT/EP2018/070713 WO 20180731
  • 国际公布: WO2019/081083 WO 20190502
  • 主分类号: H01H9/44
  • IPC分类号: H01H9/44
Electrical switching apparatus comprising an improved arc-quenching device
摘要:
The present invention relates to an electrical switching apparatus having at least one contact point, an arc-quenching device associated with the contact point, and an arc-blowing device to generate a magnetic blowout field. The arc-quenching device comprises a plurality of quenching elements, which are arranged distributed and spaced from each other in a first direction, wherein the quenching elements each comprise a permanent magnet. The arc arising when the contact point is opened is blown away from the contact point towards the quenching elements by the magnetic blowout field. The magnetic blowout field is at least partially generated or supported by the permanent magnets of the quenching elements. According to the invention, the permanent magnets of the quenching elements are offset with respect to each other in a second direction that is perpendicular to the first direction.
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