TREA

Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting

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Industry

  • CPC
  • H01H77/00
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Parent Industries

HELECTRICITY H01Electric elements H01HELECTRIC SWITCHES RELAYS SELECTORS EMERGENCY PROTECTIVE DEVICES

Current Industry

H01H77/00Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting

Sub Industries

H01H77/02in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism H01H77/04with electrothermal opening H01H77/06with electromagnetic opening H01H77/08retained closed by permanent or remanent magnetism and opened by windings acting in opposition H01H77/10with electrodynamic opening H01H77/101with increasing of contact pressure by electrodynamic forces before opening H01H77/102characterised by special mounting of contact arm, allowing blow-off movement H01H77/104with a stable blow-off position H01H77/105whereby the blow-off movement unlatches the contact from a contact holder H01H77/107characterised by the blow-off force generating means H01H77/108comprising magnetisable elements
Industries