| 摘要 |
The present invention relates to a gas insulation switchgear to prevent the function of an arc contact from being deteriorated. More particularly, the present invention discloses a gas insulation switchgear which has a structure for protecting the arc contact of a moving part from damage due to a heat gas by reducing the heat gas flowing into the arc contact. The present invention relates to a circuit breaker of the gas insulation switchgear which includes a conductor part of the moving part, a conductor part of a fixing part, and a moving load part which moves between the conductor parts of the moving part and the fixing part and changes an input state and a blocking state. The circuit breaker comprises an internal nozzle which surrounds the arc contact of the moving part, a main nozzle which surrounds the internal nozzle, and a protrusion part which reduces a gap with the internal nozzle in the lower part of the nozzle neck of the internal nozzle to reduce the inflow of the heat gas into the outer surface of the arc contact. |
