GW5-40.5 (126) outdoor AC isolation switch

Isolation switch is one of the most commonly used equipment in power systems, mainly used to isolate high voltage during equipment or line maintenance to ensure safety. It cannot disconnect load current and short-circuit current, and should be used in conjunction with a circuit breaker. During power outages, the circuit breaker should be opened first and then the isolation switch should be opened. During power transmission, the isolation switch should be closed first and then the circuit breaker should be closed. The isolation switch belongs to the double column V-shaped horizontal opening type, and each single pole is composed of a base, a pillar insulator, an outlet socket, and a contact. It consists of two supports at an angle of 50 °, and the pillar insulation insulators are installed on the bearings at both ends of the base at an angle to each other, perpendicular to the base. The main electrical parts are installed above the two pillar insulation insulators and rotate about 90 ° with the pillar insulation insulators.