Multi-polar circuit breaker

Details Multi-polar circuit breaker Multi-polar circuit breaker

1984-08-20

1986-03-04

Marcus, Stephen

Electricity: circuit makers and breakers

Liquid contact

Time delay

200 50C, 200 73, 335 8, 335160, H01H 2154

Patent

active

045741700

ABSTRACT:
By articulating the neutral-pole switching element in a multi-pole circuit breaker, providing spring biasing to urge the two elements into a pre-determined position approximating alignment, advancing the neutral pole switching element with respect to the other switching elements and providing fixed contact elements which frictionally engage opposite sides of the neutral-pole switching contact in the closed position, the closing of the neutral circuit precedes the closing of the live circuits and the opening of the neutral circuit lags the opening of the live circuits, thus preventing arcing and transient damage to loads on the circuit.

REFERENCES:
patent: 489553 (1893-01-01), Baehr
patent: 568450 (1896-07-01), Meek
patent: 3427419 (1969-02-01), Findley, Jr.
patent: 4002870 (1977-01-01), Phillips
patent: 4295025 (1981-10-01), Beatty, Jr. et al.
patent: 4383146 (1983-05-01), Bur

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