Electrical Porcelain Knife Switch 1)3P 200A 600V 2) iron,copper, zinc alloy 3)Safe usage, good quality & low factory price Electrical Porcelain Knife Switch1 ... .Specification:3P 200A 600V 2.Material:plastic cover,ceramic base and handle ... *36(cm)5.Packing:1pc/color box,4pcs/carton 3P200AD knife switch