Patent ID: 6650516
Filing Date: 2003-11-18
Classification: H02H

Abstract:
Circuit breaker circuitry, comprising:(a) control circuitry that connects a power supply to a load, comprising: a control relay, a circuit breaker connected to the control relay, and resistive contacts having a low electrical resistance; (b) sensor circuitry that detects one or more of transient, arc, and ground faults, comprising: an optocoupler emitting diode, an optocoupler detecting diode that detects electromagnetic waves emitted from the optocoupler emitting diode, and an AND gate that receives a signal from the optocoupler detecting diode as an input; (c) counting circuitry that determines a count of the one or more transient, arc, and ground faults detected; and (d) triggering circuitry that triggers the control circuitry to isolate the power supply; wherein the counting circuitry signals the triggering circuitry when the count exceeds a predetermined number during a preset time interval.