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This OEM contactor is the factory-specified high-voltage relay for the Carrier C50A303061 packaged rooftop unit. The contactor acts as the main switching device that closes the high-voltage circuit to the compressor and condenser fan motor when the thermostat calls for cooling. When a contactor fails — through pitted contacts, a burnt coil, or contacts that weld shut — the result is an AC system that won't turn on at all, runs continuously without shutting off, or trips the breaker repeatedly. Replacing this component with an OEM part ensures proper coil pull-in voltage and contact ampacity matched to your unit's factory design.
Compatibility: Designed for the Carrier C50A303061 commercial packaged unit. Cross-references OEM part numbers HN53CB115 and HN53CD115. Confirm coil voltage and pole configuration on your unit's wiring diagram or data plate before ordering. Our technical team is available to verify fitment — order with confidence and get your system back online fast.