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Current limiting circuit breaker

  • US 5,726,843 A
  • Filed: 11/21/1995
  • Issued: 03/10/1998
  • Est. Priority Date: 11/21/1994
  • Status: Expired due to Fees
First Claim
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1. A current limiting circuit breaker comprisinga main circuit switch inserted in a line of power supply lines that constitute a main circuit;

  • a solid-state switch connected in parallel with said main circuit switch;

    fault detecting means for detecting a fault in relation with a power supply of said main circuit;

    fault time command means for commanding to open said main circuit switch and to close said solid-state switch responsive to a detected output of said fault detecting means;

    commutation detecting means for detecting a current flowing in said solid-state switch; and

    circuit breaking operation means for circuit breaking said solid-state switch when a detected current of said commutation detecting means during the opening process of said main circuit switch indicates a normal value.

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