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Circuit breaker

  • US 4,550,232 A
  • Filed: 07/18/1983
  • Issued: 10/29/1985
  • Est. Priority Date: 07/16/1982
  • Status: Expired due to Fees
First Claim
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1. An electric switching device, particularly a safety switch comprising a housing;

  • and a contact system mounted in said housing and including contact bridges movable relative to said housing, stationary contact bars cooperating with the bridges to close or to open an electric circuit, a contact bridge carrier supporting two contact bridges and including means for resiliently pressing the bridges against opposite sides of the contact bars, and converting means movable relative to said housing between two positions and being engageable with at least a part of the contact system so that in one position the switching device operates as a circuit maker and in the other position as a circuit breaker, said converting means including a center piece mounted on said bridge carrier between said two bridges and being displaceable between a first position in which, in the rest position of said bridge carrier, both bridges are spaced apart from the contact bars so that the device operates as a circuit breaker, and a second position in which one of the bridges is spaced apart from the contact bars and the other bridge is in contact with the contact bars so that the device operates as a circuit maker.

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