Patent ID: 7215519

Claim:
A ground and line fault interrupter comprising: a magnetic core, wherein at the most three load wires of a three phase electrical circuit are fed directly through said magnetic core, and wherein said magnetic core is capable of detecting a magnetic field from at least one fault current flowing through said load wires; a unit of multiple conductive windings, wherein no more than one unit of multiple conductive windings is wound on said magnetic core providing a first output voltage and a second output voltage and being magnetically coupled to said magnetic core, wherein said first output is directly proportional to a line-to-ground fault level, and wherein said second output is directly proportional to a line-to-line fault level; a first sensing circuit being electrically connected to said multiple conductive windings and monitoring said first output voltage, wherein said first sensing circuit detects line-to-ground fault conditions between at least one of said load wires and ground; a second sensing circuit being electrically connected to said multiple conductive windings and monitoring said second output voltage, wherein said second sensing circuit detects line-to-line fault conditions between at least two of said load wires; and a printed wiring board circuit breaker being electrically connected to an output of said first sensing circuit and an output of said second sensing circuit, wherein said printed wiring board circuit breaker receives a line-to-ground fault condition signal from said first sensing circuit or a line-to-line fault condition signal from said second sensing circuit, wherein said printed wiring board circuit breaker is tripped and generates an electronic fault signal when at least one of said received fault condition signals exceeds a preset threshold; and wherein said electronic fault signal activates an external circuit breaker system that is electrically connected to said three-phase system.