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This is the factory OEM replacement contactor (part number HN52TC040) for the Carrier GZ048SXXCDXX1XX1 packaged unit. The contactor is a high-voltage relay that receives a 24V signal from the thermostat and closes to send line voltage to the compressor and condenser fan motor. When a contactor fails — due to pitted contacts, a burned coil, or a stuck plunger — your system will appear to call for cooling but nothing will start, or the unit may run continuously without shutting off.
Compatibility: Designed specifically for the Carrier GZ048SXXCDXX1XX1 packaged unit. Always verify coil voltage and pole configuration on your unit's wiring diagram or data plate before ordering. If you're unsure of fitment, our HVAC parts specialists are available to confirm compatibility before you buy — no guesswork required. In-stock and ready to ship today.