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This OEM contactor (part number HN52TC040) is the factory-specified high-voltage relay replacement for the Carrier GC048VTRCDET1XX1 packaged unit. The contactor is the critical switching component that closes the high-voltage circuit to the compressor and condenser fan motor when the thermostat calls for cooling. When the contactor fails — due to burned or pitted contacts, a stuck plunger, or a failed coil — the system will appear completely unresponsive despite the thermostat signaling a call for cooling. You may also notice the unit buzzing continuously or failing to shut off entirely.
Compatibility: Engineered for the Carrier GC048VTRCDET1XX1 packaged unit (4-ton, R-410A). Always verify your existing contactor's pole count, amperage rating, and coil voltage against your unit's data plate before ordering. Our parts specialists are available to confirm fitment — just reach out before you buy. Order today and receive same-day shipping on all in-stock OEM components.