Circuit breaker

Details Circuit breaker Circuit breaker

2005-05-24

2005-05-24

Donovan, Lincoln (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

C335S172000

Reexamination Certificate

active

06897747

ABSTRACT:
A microprocessor-based circuit breaker includes a removable chip that defines the current rating or ground fault current for the breaker. The breaker includes mechanical components that trip to disconnect the load terminal from the line input. The mechanical components include a floating breaker arm, trigger and tripper lever that cooperate to control the tripping of the breaker. A spring between the breaker arm and trigger, together with cam surfaces defined in the breaker switch cooperate to form a floating linkage to control the position of the breaker arm during on/off activation and current fault conditions. The circuit breaker also includes multiple indicia to provide a visual indication of the type of fault condition sensed by the breaker.

REFERENCES:
patent: 4550360 (1985-10-01), Dougherty
patent: 4589052 (1986-05-01), Dougherty
patent: 4631625 (1986-12-01), Alexander et al.
patent: 5136457 (1992-08-01), Durivage, III
patent: 5159519 (1992-10-01), Cassidy et al.
patent: 5481235 (1996-01-01), Heise et al.
patent: 5872495 (1999-02-01), DiMarco et al.
patent: 6055145 (2000-04-01), Lagree et al.
patent: 6279115 (2001-08-01), Baumgärtl et al.

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