porcelain knife switch 1) 2P20A,2P30A,2P60A,2P100A 2) We have our own factory,competitive price 3) double/single throw Double throw porcelain knife switch 2P60AD,knife switch Product namePorcelain knife switch 2P60ADMaterialsbase+coverporcelain+ABSknifecopper-plated iron, brass or copperInner accessoriescopper or ironElectrical specificationsvoltage110-600VElectric current20A, 30A, 60A,100A and ...