Lennox 21J03 Contactor 24V DPDT 25AMP

The Lennox 21J03 Contactor is an essential part made for Lennox HVAC equipment and mostly used in air conditioners and heat pumps. This heavy-duty switch works as a power control relay and controls high current in your electrical system. The 21J03 contactor gets commands from your thermostat and uses its electromagnetic coil 24 VAC to switch internal contacts. This enables high current 25 Amps to be delivered to the compressor or other high power loads when required and turn off when the cooling or heating cycle is done. The contactor is to provide a precise control of power in order to contribute to the proper functioning of your Lennox HVAC system.