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Current limiter assembly for a circuit breaker

  • US 4,165,502 A
  • Filed: 06/08/1977
  • Issued: 08/21/1979
  • Est. Priority Date: 06/08/1977
  • Status: Expired due to Term
First Claim
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1. A current limiting assembly for a circuit breaker having a pair of serially connected main circuit breaker contacts operable to an open position in response to the movement of a trip bar in response to either an overheat or overcurrent condition, the improvement comprising:

  • a pair of current limiting contacts,an electromagnet assembly including a low resistance winding connected to said main contacts and operable in response to a high fault current for opening said current limiting contacts, anda bimetal serially connected between said winding and one of said current limiting contacts for responding to an overheat condition to move said trip bar for opening said main contacts.

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