Earth leakage breaker

Details Earth leakage breaker Earth leakage breaker

2007-01-23

2007-01-23

Sircus, Brian (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

C361S044000

Reexamination Certificate

active

10790197

ABSTRACT:
An earth leakage breaker includes a main contact, a switch mechanism, an operating handle, a leakage tripping device and an over-current tripping device having an earth-leakage-detection circuit disposed in a main-body case. A power-supply line connects the earth-leakage-detection circuit to the main circuit for supplying voltage between phases of the main circuit as a power source of the earth-leakage-detection circuit. Further, a test switch is provided for turning on and off a power-supply circuit of the power-supply line connected to the earth-leakage-detection circuit, and an operation of the test switch is linked to an ON/OFF operation of the switch mechanism.

REFERENCES:
patent: 6784770 (2004-08-01), Gimenez et al.
patent: 2001/0022713 (2001-09-01), Gimenez et al.
patent: 0 611 224 (1984-08-01), None
patent: 0320409 (1989-06-01), None

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