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This OEM contactor is the factory-specified replacement for the Carrier C4850C48Z6105610 packaged unit. The contactor is the high-voltage relay that receives a low-voltage (24V) signal from the thermostat and closes the circuit to energize the compressor and condenser fan motor. When it fails, the most common symptoms are an air conditioner that won't turn on at all, a unit that runs continuously without shutting off (welded contacts), or visible pitting and burning on the contact faces.
Compatibility: Designed for the Carrier C4850C48Z6105610 packaged unit. Cross-reference your existing contactor's pole count, coil voltage, and amperage rating against your unit's data plate before ordering. All three OEM part numbers — HN53CB115, HN53HF122, and HN53HG120 — are verified fits for this application. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you order — no guesswork required.