Circuit breaker

Details Circuit breaker Circuit breaker

1991-04-25

1993-02-02

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335147, 335195, 335132, 335202, H01H 7500

Patent

active

051841002

ABSTRACT:
A circuit breaker having at least one phase or pole including a first movable arm having a first contact and a second movable arm having a second contact. The first arm is driven by a switching gear. The second arm is disposed opposite to the first movable arm such that the second contact contacts the first contact when a normal current flows. The first arm exerts an electromagnetic repulsive force in such a direction that the first and second arms repel each other to open the first second contacts when a current exceeds a predetermined value. The second arm is pivotally supported by a support angle fixed on a housing and is electrically connected via a flexible lead with a terminal also fixed on the housing. The support angle and the terminal are fitted to an insulator such that the support angles, the terminal and insulator are assembled in a unitary construction.

REFERENCES:
patent: 4539538 (1985-09-01), Flick et al.
patent: 4654491 (1987-03-01), Maier et al.
patent: 4970481 (1990-11-01), Arnold et al.
patent: 5027096 (1991-06-01), White et al.

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