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08 series

Switchgear consisting of a mobile and circular contact bridge (1), a contact bearing pin (2), a spring snap-in disc (3) and a bimetallic disc (4) which is riveted into one another, undetachable and fixed in a positive lock and self-aligning between a non-conductive floor of a housing (5) and an insulating ceramic bearing (6) with two integrated stationary contacts (7) as electrodes. At the same time, the switchgear is initially held open by the spring snap-in disc (3) with the contact bridge (1) acting as a transfer element for electric current after the switching process) which is fastened between a supporting collar and a circumferential ring. As such, the bimetallic disc (4) underlying it, that is also stuck out from the contact bearing pin (2), can continuously work (exposed) by mechanical loads without the distance between the contact surfaces (defined by the spring snap-in disc (3)) diminishing. As soon as the bimetallic disc (4) reaches its rated switching temperature, it effectively springs against the throw force of the spring snap-in disc (3) into its inverted position. The contacts (7) are abruptly closed. The temperature will now fall. The bimetallic disc (4) will only snap back upon reaching a defined spring back temperature and the contacts will be abruptly opened again. As a result of the dimensioning of the contact bearing pin (2), an easy, circular rotation of the circle-shaped contact bridge (1) is enabled with every switch so that transfer resistances remain constantly below the minimum limit after many switch cycles and the long term stability is sustained even under high levels of stress.

Products in the 08 range

V08

Power class: 4,0 A to 25,0 A
Type series: 08

  • normally open
  • resets automatically
  • with connector cables
  • double-insulated in the attachment housing

H08

Power class: 4,0 A to 25,0 A
Type series: 08

  • normally open
  • resets automatically
  • with connector cables
  • fully insulated in the attachment housing

P08

Power class: 4,0 A to 25,0 A
Type series: 08

  • normally open
  • resets automatically
  • with connection pins
  • fully insulated in the attachment housing

L08

Power class: 4,0 A to 25,0 A
Type series: 08

  • normally open
  • resets automatically
  • with connector cables
  • fully insulated in a screw on housing

S08

Power class: 4,0 A to 25,0 A
Type series: 08

  • normally open
  • resets automatically
  • with connector cables
  • Mylar®-Nomex®

C08

Power class: 4,0 A to 25,0 A
Type series: 08

  • normally open
  • resets automatically
  • with connector cables
  • without insulation
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