Gas circuit breaker

A gas circuit breaker comprising:

• a cylindrical tank in which insulating gas is enclosed;
• a stator fixed inside the tank;
• and
• a mover disposed in such a way as to face the stator in an axial direction of the tank, the mover being movable between a closing position and a cutoff position, the mover being in contact with the stator when located in the closing position, the mover being out of contact with the stator when located in the cutoff position, wherein
• the stator includes:
• a stator-side main contact extending in the axial direction of the tank, the stator-side main contact being fixed inside the tank;
• a stator-side resistance contact connected to an electric resistor, the stator-side resistance contact having a ring shape surrounding the stator-side main contact from an outer circumferential direction of the tank and adapted to protect the stator-side main contact from an electric field;
• and
• a spring and a dashpot supporting the stator-side resistance contact from a direction opposite to a direction in which the stator-side resistance contact faces the mover, the spring and the dashpot supporting the stator-side resistance contact such that the stator-side resistance contact is movable in the axial direction of the tank, the spring and the dashpot biasing the stator-side resistance contact in a direction in which the stator-side resistance contact approaches the mover,
• the mover includes:
• a mover-side main contact disposed in such a way as to face the stator-side main contact in the axial direction of the tank;
• and
• mover-side resistance contacts disposed in such a way as to face the stator-side resistance contact in the axial direction of the tank, and
• in a state where the mover is located in the cutoff position, a distance between the mover-side resistance contacts and the stator-side resistance contact is less than a distance between the mover-side main contact and the stator-side main contact,
• wherein the mover includes solid shields, each shield has a closed surface without sharp edges and surrounding the respective mover-side resistance contact of the mover-side resistance contacts.