FIELD: switching engineering. SUBSTANCE: vacuum-insulated switch has first and second movable contacts, fixed contact, ground contact, and load contact all insulated from each other and placed in evacuated case made of conducting material. Second movable contact is designed for closing and opening ground contact and load contact. First and second movable contacts open and close load contact in phase opposition. EFFECT: reduced size and cost, simplified design. 2 cl, 11 dwg
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