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This OEM contactor is the factory-specified high-voltage relay for the Carrier C50A306052 packaged unit. The contactor acts as the primary switching device that closes when the thermostat calls for cooling, sending line voltage to the compressor and condenser fan motor. When a contactor fails — due to pitted or welded contacts, a burned coil, or chattering — the result is typically an AC system that won't turn on, runs continuously without shutting off, or trips the breaker. Replaces OEM part numbers HN53CB115, HN53HF122, and HN53HG120.
Compatibility: Engineered as a direct OEM replacement for Carrier model C50A306052 commercial packaged units. Cross-references part numbers HN53CB115, HN53HF122, and HN53HG120 — verify your existing contactor's pole count, coil voltage, and amp rating against your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you buy. Order now — in stock and ships today.