Ceramic knife switch 1.Double/single throw 2.3P60AS, 3.Full Copper & Full iron plated-copper 4.CE . ... current: 20A, 30A, 60A , 100A and 200Amps;4. Double throw, part number includes: 2P20, 2P30, 2P60 and 2P100; 3P20, 3P30, 3P60 and ... ; 4p60, 4p100; 5. Material of Knife metal: (1) Full copper (2) Full Iron plated-copper (3) Full iron plated-copper, zinc ...