This double pool contractor is intended to be used with several different pool and spa heaters. This AC coil has 230 volts, and a 50amps. If you are installing this contactor in a location utilizing larger wire, it may be necessary to install lugs or larger solderless connectors to make the wiring connection. Coil Voltage: 230V AC Pole/Throw: Double Pole Single Throw Amperage: 50A