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This OEM contactor is the factory-specified replacement for the Carrier C48A506052 packaged unit. The contactor acts as a high-voltage relay, using a 24V signal from the thermostat control board to close the high-voltage circuit that powers the compressor and condenser fan motor. When the contactor fails — due to burned or pitted contacts, a stuck plunger, or a failed coil — the system will not respond to a cooling call, leaving you with a unit that hums, chatters, or simply does not start. Replaces OEM part numbers HN53CB115, HN53HF122, and HN53HG120.
Compatibility: Designed for the Carrier C48A506052 packaged gas/electric unit. Cross-references OEM part numbers HN53CB115, HN53HF122, and HN53HG120. Always confirm pole count, amperage rating, and coil voltage against your unit's wiring diagram and data plate before ordering. Our technical team is available to verify fitment — contact us before you order if you have any questions.