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This OEM replacement contactor is the factory-specified high-voltage relay for the Carrier C48A506012 packaged unit. The contactor acts as the primary switching device that closes the high-voltage circuit to the compressor and condenser fan motor when the thermostat signals a call for cooling. When a contactor fails — due to pitted contacts, a burned coil, or a stuck plunger — the result is an AC system that simply won't turn on, hums without starting, or trips the breaker repeatedly. Replacing a worn contactor is one of the most common and cost-effective HVAC repairs available. OEM part numbers covered by this listing include HN53CB115, HN53CD115, and HN53HF122.
Compatibility: Engineered for the Carrier C48A506012 packaged unit. Cross-references OEM part numbers HN53CB115, HN53CD115, and HN53HF122 — verify your existing contactor's pole count, coil voltage, and amperage rating against your unit's data plate before ordering. Our parts specialists are available to confirm fitment before you buy. In stock and ready to ship today — get your system back up and running fast.