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This is the factory-specified OEM replacement contactor for the Carrier C50A506052 commercial packaged unit. The contactor is the high-voltage relay that closes the circuit between your electrical supply and the compressor and condenser fan motor each time the thermostat calls for cooling. When a contactor fails — due to burned or pitted contact points, a stuck plunger, or a failed coil — the air conditioning system will not start, will short-cycle, or will run continuously without responding to thermostat signals. Replaces OEM part numbers HN53CB115, HN53HF122, and HN53HG120.
Compatibility: Designed as a direct OEM replacement for Carrier model C50A506052 commercial packaged equipment. Cross-references OEM part numbers HN53CB115, HN53HF122, and HN53HG120. Always verify coil voltage and pole configuration against your unit's wiring diagram before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — contact us before placing your order.