High voltage switch.The rated voltage of 3kV and above is mainly used for breaking and closing electrical appliances of conductive circuits. From 2007 to 2012, the total industrial output value of the high-voltage switch manufacturing industry increased year by year, with a year-on-year growth rate of more than 10%, and the industry maintained a relatively rapid development speed.Normal rated voltage is 6kv 11kv 22kv 38kv