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This OEM contactor is the factory-specified replacement for the Carrier C4850C50AK04091 packaged unit. The contactor is the high-voltage relay that receives a 24V signal from your thermostat and closes to send line voltage to the compressor and condenser fan motor. When the contactor fails — due to worn contacts, pitting, or a stuck/burned coil — the result is an AC system that won't turn on, runs continuously without shutting off, or trips the breaker repeatedly. Replaces OEM part numbers HN53CB115 and HN53HF122.
Compatibility: Designed for the Carrier C4850C50AK04091 4-ton packaged unit. Cross-references OEM part numbers HN53CB115 and HN53HF122. Verify coil voltage and pole count on your unit's data plate before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before your order ships — same-day on all in-stock items.