Copeland 529 0061 00 Molded Plug 320788 702 this is a 3 pole contactor this is a 3 pole contactor designed specifically for three phase equipment or systems requiring simultaneous switching of three legs of power This kit provides the necessary tempering valve internal components to resolve common failure points like temperature creep or restricted flow in domestic hot water applications This allows the internal unloader solenoid to actuate smoothly without the "chatter" or coil burnout often caused by raw AC signals performing the necessary AC to DC signal conversion required to drive unloader solenoids found in advanced Copeland Scroll UltraTech compressors