Gas insulated switchgear

The utility model relates to a gas insulated switchgear. The gas insulated switchgear comprises a sealing box and a three-position switch. The sealing box is used for filling a gas insulating medium. The three-position switch comprises a grounding contact seat, an isolation contact seat, a switching-on contact seat and a moving contact which are arranged in the sealing box, and the edges of the grounding contact seat, the isolation contact seat, the switching-on contact seat and the moving contact are configured to be arc-shaped. According to the gas insulated switchgear, the edges of the grounding contact seat, the isolation contact seat, the switch-on contact seat and the moving contact in the sealing box are in arc transition, so that the improvement of an electric field can be facilitated, and the breakdown risk can be reduced. Therefore, on the premise that the electric field distribution in the sealing box is more uniform, even if environment-friendly gas is used as a gas insulation medium, the filling