600V AC and 20A ,30A, 60A, 100A, 200A power knife switch / isolating switch Power knife switch / isolating switch Feature:1) Material: porcelain base, copper / iron selectable for inner component2) Voltage: 600V AC 3) Current: 20A ,30A, 60A, 100A, 200A4) Safe usage, easy installation, long life working.5) OEM is accepted, our most export knife switch are marked with client's brands logo according ...