Double-contact switch with vacuum interrupters

The invention relates to a double-contact switch having a first and a second tube-shaped vacuum interrupter chamber (1, 3), a stationary, disposed between the first and second vacuum switching chamber electrode (4) having a first, into the first vacuum switching chamber (1) protruding fixed contact ( 41) and a second (in the second vacuum interrupter chamber 3) projecting into the fixed contact (42), arranged one (in the first vacuum interrupter chamber 1) and (in this movable in the axial direction of the first electrode 11) with a contact (12) supporting area which is closed off from the exterior of the first vacuum switching chamber (1) in a gastight manner, arranged one in the second vacuum switching chamber (3) and in this movable in the axial direction of the second electrode (31), bearing with one, one contact (32) area, the opposite is shut off gas-tight manner the outside of the second vacuum switching chamber (3), a first contact pressure spring (51) for applying the first movable electrode (11) having a first spring force such that the contact (12) of the first electrode (11) on to the first vacuum switching chamber (1) protruding fixed contact (41) is pressed, a second contact pressure spring (52) for applying the second movable electrode (31) having a second spring force such that the contact (32) of the second electrode (31) on to the second vacuum switching chamber (3) projecting into the fixed contact (42) is pressed, wherein the first spring force less than the second spring force sized.