Tapered stationary contact-line copper cross reference to relate

Details Tapered stationary contact-line copper cross reference to relate Tapered stationary contact-line copper cross reference to relate

1988-10-12

1990-08-21

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200147R, H01H 3302

Patent

active

049508539

ABSTRACT:
A molded case circuit breaker is provided with a line conductor having a U-shaped slot defining a pair of depending leg conducting portions and a peninsula portion. The U-shaped slot is adapted to receive a slot motor and also causes the current of the peninsula portion to flow in a direction opposite the direction of current flow in the movable contact arm to cause the contacts to be blown open during relatively high level overcurrent conditions. The peninsula portion is tapered outwardly, toward the base of the peninsula to increase the overall cross-sectional area of the conductor to minimize temperature rise. The tapered peninsula portion still allows a slot motor to be received in the U-shaped slot.

REFERENCES:
patent: 4337355 (1980-12-01), Fechant et al.
patent: 4489295 (1984-12-01), Altenhof, Jr. et al.
patent: 4513267 (1985-04-01), McClellan et al.
patent: 4638277 (1987-01-01), Thomas et al.
patent: 4656444 (1987-04-01), McKee et al.
patent: 4679018 (1987-07-01), McKee et al.

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