Three-phase unitary vacuum switch

Details Three-phase unitary vacuum switch Three-phase unitary vacuum switch

H - Electricity

01

H

306/215

H01H 33/66 (2006.01) H01H 33/664 (2006.01) H01H 33/02 (2006.01)

Patent

CA 1141410

ABSTRACT OF THE DISCLOSURE Disclosed is a vacuum switch comprising a three-phase contact set, each contact pair of which comprises a stationary contact and a mobile contact, each pair being accommodated in a common vacuum chamber. The three mobile contacts are connected via a common flexible mounting, comprising a bellows and a base member, to a first wall of the vacuum chamber and the three sta- tionary contacts are secured to a further wall of the vacuum chamber. Pre- ferably, each mobile contact is secured to the base member via an electrical insulator and each stationary contact is connected to the further wall of the housing by an electrical insulator whereby the bellows and the housing are electrically insulated from the contacts. The chamber may be divided into three discharge chambers containing respective contact pairs by metal dividing walls disposed in the form of a star. The simple design allows for low-cost manufacture and the service life of the parts involved corresponds to that of the actuating mechanism.

357704

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