| 摘要 |
Disclosed is a gas insulated circuit breaker which has enhanced insulation properties. The gas insulated circuit breaker includes a fixed contact point, a fixed arc contact point, a movable contact point, and a movable arc contact point, and is formed such that hot gas generated between poles flows into the movable arc contact point and is discharged toward the inner side of the movable contact point. According to the present invention, the movable contact point comprises: a fixed cylinder unit which has an inner space; a movable piston unit which is able to slide into the inner space of the fixed cylinder unit; a fixing unit which extends from the inner space of the fixed cylinder unit to the rear of the fixed cylinder unit; a puffer chamber which is surrounded by the movable piston unit, the fixed cylinder unit and the fixing unit; and a gas inlet unit which forms a path, between the puffer chamber and the outer part of the fixed cylinder unit, through which a gas flows. |
