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This OEM contactor is the factory-specified replacement for the Carrier CP50P450P406011CP packaged unit. The contactor is a high-voltage relay that responds to a 24V signal from the thermostat or control board, closing its contacts to send 240V power to the compressor and condenser fan motor. When it fails — due to pitted contacts, a burnt coil, or a stuck plunger — the result is typically an air conditioner that simply won't turn on, or one that runs continuously without cycling off.
Compatibility: Designed as a direct OEM replacement for the Carrier CP50P450P406011CP commercial packaged unit. Cross-reference OEM part number HN53CD115 against your unit's data plate and existing contactor label before ordering to confirm pole count and coil voltage. Our fitment team is available to verify compatibility before you purchase — don't hesitate to reach out.