Circuit breaker with ground fault detection module

Details Circuit breaker with ground fault detection module Circuit breaker with ground fault detection module

1998-01-14

1999-08-03

Gaffin, Jeffrey

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

361102, 361115, H02H 316

Patent

active

059333065

ABSTRACT:
A ground fault protection module is attached to a circuit breaker employing a thermal-magnetic trip unit to separate the circuit breaker contacts upon occurrence of a ground fault. The ground fault module contains a logic circuit and a giant magnetic resistor for detecting the ground fault.

REFERENCES:
patent: 3621334 (1971-11-01), Burns et al.
patent: 4513268 (1985-04-01), Seymour et al.
patent: 4667263 (1987-05-01), Morris et al.
patent: 5023684 (1991-06-01), Tsunoda
patent: 5627704 (1997-05-01), Lederman et al.

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