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Multifunction circuit breaker with single test button

  • US 10,126,346 B2
  • Filed: 11/22/2013
  • Issued: 11/13/2018
  • Est. Priority Date: 11/22/2013
  • Status: Active Grant
First Claim
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1. A system for providing user-initiated testing in a multifunction circuit breaker device, comprising:

  • a microcontroller configured to perform an arc fault self-test sequence and a ground fault self-test sequence in the multifunction circuit breaker device;

    a supervisory circuit connected to the microcontroller and configured to simulate a ground fault for the ground fault self-test sequence; and

    a test actuator connected to the supervisory circuit and configured to provide a single test input to the supervisory circuit when operated by a user, the single test input causing the supervisory circuit to simulate the ground fault for the ground fault self-test sequence;

    wherein the microcontroller is configured to initiate the arc fault self-test sequence and the ground fault self-test sequence when the test actuator provides the single test input to the supervisory circuit, and to provide a pass indication to the user if both the arc fault self-test sequence and the ground fault self-test sequence pass;

    wherein the microcontroller is further configured to provide no indication to the user if either the arc fault self-test sequence or the ground fault self-test sequence fails.

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