OEM Carrier 2-Pole Contactor HN53CB115 for Model C4850C50AY02791

This is the factory OEM replacement contactor (part number HN53CB115) for the Carrier C4850C50AY02791 packaged unit. The contactor is a high-voltage relay that receives a 24V signal from the thermostat or control board and closes its contacts to deliver line voltage to the compressor and condenser fan motor. When the contactor fails — due to worn or pitted contacts, a burned coil, or a stuck plunger — the system will fail to start entirely, run continuously without shutting off, or trip the breaker. Replacing a failed contactor is one of the most common and cost-effective HVAC repairs available.

• Specs: 2-pole configuration | 24V AC coil voltage | 30–40A rated contacts | Direct OEM replacement per part number HN53CB115 | Factory-matched contact material for full rated life
• OEM vs Generic: This OEM contactor uses factory-spec contact alloys and coil windings. Generic contactors often use lower-grade contact materials that pit and fail faster under the high inrush currents of compressor startup — costing more in repeat service calls over time.
• Install Difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. Label each wire to its terminal. Swap one wire at a time to avoid miswiring.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier C4850C50AY02791 packaged unit. Always verify your existing contactor's pole count, coil voltage, and amperage rating against your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — contact us anytime.