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Fail safe fault interrupter using secondary breaker

  • US 6,831,819 B2
  • Filed: 09/08/2002
  • Issued: 12/14/2004
  • Est. Priority Date: 09/09/2001
  • Status: Active Grant
First Claim
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1. A fail safe fault interrupt apparatus situated between an electrical source and an electrical load and comprising:

  • a fault sensing component that detects an electrically unsafe operating condition and generates a fault detection signal in response thereto;

    a primary electrical current interrupting component disposed between said electrical source and said electrical load that is activated to interrupt power delivery to said electrical load in response to said fault detection signal; and

    a test circuit component that automatically monitors the output of said fault sensing component and upon the occurrence of a fault detection signal, delays for a specified time interval and then generates a trigger signal.

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