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This OEM Carrier contactor (part number HN52KC025) is the factory-specified high-voltage switching relay for the Carrier PY1PPA048100AGBA packaged unit. The contactor serves as the critical electrical bridge between the 24V thermostat control circuit and the high-voltage compressor and condenser fan circuits. When the thermostat calls for cooling, the 24V coil energizes and closes the contacts, sending line voltage to the compressor. A failed contactor typically presents as an AC system that simply will not turn on, hums without starting, or exhibits burned or pitted contact points that prevent proper electrical flow.
Compatibility: Designed for the Carrier PY1PPA048100AGBA packaged unit. Note that OEM part HN52KC025 has been superseded — our stock reflects the current OEM-equivalent 2-pole 30A 24V replacement that meets all original factory specifications. Verify pole count, amperage, and coil voltage on your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment prior to purchase.