Gas circuit breaker

A gas circuit breaker comprising:

• a first tank filled with an insulating gas;
• a fixed contact provided inside the first tank;
• a movable contact provided inside the first tank and movable between a position in contact with the fixed contact and a position separated from the fixed contact;
• a nozzle that ejects the insulating gas toward the fixed contact when the movable contact moves in a first direction, the first direction being a direction in which the movable contact moves from the position in contact with the fixed contact to the position separated from the fixed contact;
• a cylindrical body that guides the gas ejected from the nozzle in a second direction, the second direction being a direction opposite to the first direction;
• and
• a second tank connected to the first tank in the second direction, wherein
• the second tank has a cylindrical shape centering on an axis extending in a direction perpendicular to the first direction as a central axis, and a cross section of the second tank has an elliptical shape.

A gas circuit breaker comprising:

• a first tank filled with an insulating gas;
• a fixed contact provided inside the first tank;
• a movable contact provided inside the first tank and movable between a position in contact with the fixed contact and a position separated from the fixed contact;
• a nozzle that ejects the insulating gas toward the fixed contact when the movable contact moves in a first direction, the first direction being a direction in which the movable contact moves from the position in contact with the fixed contact to the position separated from the fixed contact;
• a cylindrical body that guides the gas ejected from the nozzle in a second direction, the second direction being a direction opposite to the first direction;
• and
• a second tank connected to the first tank in the second direction, wherein
• the second tank has a spherical shape.