GW23(GT9)-252D/2500-50 type double column (horizontal fracture) foldable outdoor AC high voltage isolating switch is suitable for AC frequency 50Hz, rated voltage 220kV system, used for high-voltage lines, circuit breakers and other electrical equipment without It can be electrically isolated under load and can also be used for switching operation. It is a mature product recommended by our company for high-voltage power distribution networks. It analyzes the defects of the current isolation switch conductive circuit overheating, operating mechanism failure, and severe corrosion of metal materials. After major improvements, it has been successfully developed. The product has many advantages such as beautiful appearance, simple structure, corrosion resistance, good seismic performance, safe and reliable electrical and mechanical performance.