The isolating switch is an electrical appliance composed of three single-pole components. Each single-pole switch has the same components, such as the base, the pillar insulator, and the contacts. 
(1) Installation plate: Made by bending 2.5mm - 4mm thick steel plates, the surface undergoes hot-dip galvanizing treatment. Alternatively, it can be made of stainless steel 304 as the base. 
(2) Support insulators: Made of high-strength porcelain or composite silicone rubber; 
(3) Upper and lower contacts: Made of a single-piece special-shaped copper material and treated with tin plating process. They are fixed on the insulators at both ends of the pillar, with the protruding surface being embossed. The contact area has uniform force distribution and higher contact performance. 

(4) The air insulation distance between phases meets the requirements of the State Grid and Southern Grid.