Switch device having an insulating screen inserted between the c

Details Switch device having an insulating screen inserted between the c Switch device having an insulating screen inserted between the c

1985-11-25

1987-10-13

Budd, Mark O.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3306

Patent

active

047000309

ABSTRACT:
An electric switch in which a screen is inserted very quickly between two contacts at the moment when they part. The energy of the arc generated between the contacts inside a volume surrounded by an insulating mobile sheath is used to heat gases released, and the resulting gas pressure displaces the sheath quickly, so that the arc passing through an opening in the sheath is sheared between the sheath and the housing. This type of switch is used to advantage in protection apparatus designed to respond to an abnormal increase of the current flowing in a circuit in which they are series mounted, and in switches where rated current is high.

REFERENCES:
patent: 4562323 (1985-12-01), Belbel et al.

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