This genuine replacement on/off switch is specially designed for Campbell Hausfeld air compressors. It is supplied directly from original manufacturer and it is sold individually. This switch is used to turn the compressor on and off. Switches have moving mechanical parts that will eventually fail. At this point the switch should be repla...Read moreced. This is a simple repair that will only require a screwdriver. • Remove screws from the housing • Lift up the housing • Disconnect wires from the switch • Remove old switch and secure new one in place • Reassemble and test the compressor