The isolation switch is composed of brackets, bases, post insulators contacts, wiring boards, and other parts. The pillar insulator and conductive part are installed on the base, and the intersection angle of the two pillar insulators is 50 °. The base is fixed on a bracket tilted at 25 °. The bracket is equipped with a shaft connected to the operating mechanism. It can be equipped with a CS17G manual operating mechanism or an electric mechanism such as CJ6.