Contact-separating device for circuit breakers

Details Contact-separating device for circuit breakers Contact-separating device for circuit breakers

1994-07-25

1996-03-26

Recla, Henry J.

Electricity: circuit makers and breakers

Contact moved by sudden release of stored energy,

200DIG42, 200244, 200250, 74516, 74522, H01H 500

Patent

active

055022855

ABSTRACT:
A device for separating a pair of electric contacts which tend to weld and consist of a stationary contact 11 and a contact 12 which is movable away from the stationary contact, particularly in a circuit breaker is provided. The device includes a tripping lever 17, which is biased in a contact-separating direction and serves to actuate the movable contact 12, and means 19 for holding the tripping lever 17 in its stand-by position. The movement of the tripping lever 17 from its stand-by position involves a displacement of a lever fulcrum to a first position where a strong separating force is exerted on the movable contact 12 and then to a second position where a weaker separating force is exerted on the movable contact 12.

REFERENCES:
patent: 3953697 (1976-04-01), Teichert
patent: 4061895 (1977-12-01), Hults
DE Search Report Feb. 2, 1994.

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