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This OEM contactor (part number HN53CD115) is the factory-specified high-voltage relay for the Carrier CP50P350P305520CP packaged unit. The contactor acts as the primary electrical switch that routes line-voltage power to the compressor and condenser fan motor whenever the thermostat calls for cooling. When the contactor fails — due to pitted contacts, a burned coil, or contacts welded shut — the system will either refuse to start, run continuously without shutting off, or trip the breaker repeatedly. Replacing it with the correct OEM part restores reliable switching and protects your compressor investment.
Compatibility: Designed and factory-specified for the Carrier CP50P350P305520CP packaged unit. Always verify your unit's data plate voltage and amperage specifications match before ordering. Our HVAC parts specialists are available to confirm fitment — just reach out before you buy. In stock and ready to ship today.