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,inner accessories :copper or aluminium availableis in iron,copper, zinc alloy etc.or can be customised3.Advantage:Safe usage, good quality ,timely delivey date, low ...