Contact arrangement for low-voltage circuit breakers with main c

Details Contact arrangement for low-voltage circuit breakers with main c Contact arrangement for low-voltage circuit breakers with main c

1986-10-24

1988-01-19

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3312

Patent

active

047206136

ABSTRACT:
A contact arrangement for low-voltage circuit breakers comprises a fixed and movable main contacts and fixed and movable burn-off contacts. With the burn-off contacts, arcing horns as well as an arc quenching chamber are associated. Upon heavy stress of the contact arrangement, partial arcs occurring at the main contacts are taken over by arc pieces and conducted to the arcing horns. Also in case of a larger number of main contacts, a relatively narrow arc quenching chamber can be used.

REFERENCES:
patent: 3784775 (1974-01-01), Gryctko

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