Vacuum switch for the low-voltage range, especially a low-voltag

Details Vacuum switch for the low-voltage range, especially a low-voltag Vacuum switch for the low-voltage range, especially a low-voltag

1984-11-30

1986-09-30

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3366

Patent

active

046148507

ABSTRACT:
A vacuum switch for the low-voltage range, in particular, a low voltage contactor, comprising a vacuum switching tube having a switching chamber and a first contact rigidly arranged therein and a lead-in pin movable relative thereto having a second contact, wherein the vacuum switching tube has an insulating member which is surrounded on the vacuum side at least partially by shielding. The shielding is arranged as a concentric hollow cylinder and the insulating member comprises a ring shaped member, preferably of ceramic. The axial length of the shielding cylinder is at least 1.5 times that of the ring. A vacuum switch having a short insulating path thus can be constructed cost-effectively and which has the capability for a high number of switching cycles.

REFERENCES:
patent: 3087034 (1963-04-01), Beers et al.
patent: 3163734 (1964-12-01), Lee
patent: 3950628 (1976-04-01), Hruda
patent: 4077114 (1978-03-01), Sakuma
patent: 4365127 (1982-12-01), Sakuma et al.

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