Circuit breaker contact assembly

Details Circuit breaker contact assembly Circuit breaker contact assembly

1988-12-09

1990-04-10

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335147, 335195, H01H 7500

Patent

active

049164198

ABSTRACT:
A circuit breaker having a movable upper blade with a free floating pivot end. The operating mechanism is solidly connected to the upper blade. The contact force is generated by a contact spring which exerts an upward force on the lower blade. No other resilient force acts directly upon the upper blade. As the contacts separate, the force exerted on the upper blade is virtually eliminated, reducing substantially the resistance at the pivot end of the upper blade. The load terminal and pivot end of the upper blade provide a current path parallel to that of the load side flexible connector.

REFERENCES:
patent: 3593227 (1971-07-01), Mitskevich et al.
patent: 4259651 (1981-03-01), Yamat
patent: 4608545 (1986-08-01), Kralik
patent: 4626811 (1986-12-01), McKee et al.
patent: 4743875 (1988-05-01), Murphy

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