OEM Carrier 2-Pole Contactor HN53CB115 for Model C4850C50AJ03611

This is the factory OEM replacement contactor (part number HN53CB115) for the Carrier C4850C50AJ03611 packaged unit. The contactor is the high-voltage relay that receives a 24V signal from the thermostat and closes the circuit to send line voltage to the compressor and condenser fan motor. When a contactor fails, the most common symptoms include the system failing to turn on at all, the compressor humming but not starting, or visible pitting and burning on the contact points. Left unaddressed, a worn contactor can cause compressor damage — making early replacement critical.

• Specs: 2-Pole configuration | 24V AC coil voltage | 40A rated contacts | Direct OEM replacement for part number HN53CB115 | Factory-matched construction for reliable switching
• OEM vs Generic: This OEM contactor uses factory-spec contact materials and coil windings, ensuring proper pull-in voltage and extended contact life. Generic contactors often use lower-grade contact alloys that pit and weld faster, increasing the risk of compressor failure or a contactor stuck in the closed position.
• Install difficulty: 2/5 — Always disconnect power at the breaker and verify zero voltage with a multimeter before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removing the old contactor to ensure correct reinstallation.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier C4850C50AJ03611 packaged unit. Always verify coil voltage and pole configuration against your unit's wiring diagram and data plate before ordering. Our fitment team is available to confirm compatibility before you purchase — same-day shipping available on all in-stock orders.