Method for controlling contact depression for high ampere-rated

Details Method for controlling contact depression for high ampere-rated Method for controlling contact depression for high ampere-rated

1994-08-08

1996-05-21

Walczak, David J.

Electricity: circuit makers and breakers

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200400, 335 16, H01H 500

Patent

active

055191800

ABSTRACT:
The contact depression effected between the fixed and moveable contacts in a high ampere-rated circuit breaker is fixed after assembly of the current carrying components by the provision of a multi-dimensional contact carrier support bearing. The selection of the support bearing dimension fixes the height of the movable contact arm and the attached movable contact relative to the subjacent fixed contact. Control of the contact depression improves circuit interruption efficiency and extends the operating life of the circuit breaker contacts.

REFERENCES:
patent: 3735075 (1973-05-01), Kidd
patent: 3755638 (1973-08-01), Lucas et al.
patent: 4001742 (1977-06-01), Jencks
Castonguay et al., "A system for resetting high ampere-rated circuit breaker operating springs"; U.S. Ser. No. 08/228,761 Filed Apr. 19, 1994.
Castonguay et al, "Rating module unit for high ampere-rated circuit breaker" U.S. Ser. No. 08/203,062 filed Feb. 28, 1994.

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