Electrical Porcelain Knife Switch 1)3P 100A 600V 2) iron,copper, zinc alloy 3)Safe usage, good quality & low factory price Electrical Porcelain Knife Switch1.Specification:3P 100AD 600V 2.Material:plastic cover,ceramic base and handle,inner accessories :copper or aluminium availableis in iron,copper, zinc alloy etc.or can be customised3.Different sizes,different colors according to customer's ...