Double-contact switch with vacuum switching chambers

A double-contact switch, comprising:

• a first and a second tubular vacuum switching chamber, each configured as switching sub-chambers of a switching tube;
• an additional electrode, stationary in the switching tube, arranged between the first and second vacuum switching chambers, and including a first fixed contact projecting into the first vacuum switching chamber and a second fixed contact projecting into the second vacuum switching chamber;
• a first movable electrode arranged in the first vacuum switching chamber, the first movable electrode being movable in an axial direction in the first vacuum switching chamber, and the first movable electrode including a first region which supports a first electrode contact, the first region being sealed off from outside of the first vacuum switching chamber in a gas-tight manner;
• a second movable electrode arranged in the second vacuum switching chamber, the second movable electrode being movable in an axial direction in the second vacuum switching chamber, and the second movable electrode including a second region which supports a second electrode contact, the second region being sealed off from outside of the second vacuum switching chamber in a gas-tight manner;
• a first contact compression spring configured to apply a first spring force to the first movable electrode such that the first electrode contact is pressed onto the first fixed contact;
• and
• a second contact compression spring configured to apply a second spring force to the second movable electrode such that the second electrode contact is pressed onto the second fixed contact,
• wherein the first spring force is less than the second spring force;
• wherein the switching tube is movably mounted in a housing of the double-contact switch, and
• wherein the first movable electrode is rigidly connected to the housing of the double-contact switch.