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OEM Carrier 2-Pole 24V Coil Definite Purpose Contactor for C4850C50AY05161 | National HVAC Parts
Carrier

OEM Carrier 2-Pole 24V Coil Definite Purpose Contactor for C4850C50AY05161 | National HVAC Parts

SKU: CARRIE-C4850C50AY05161-CONTACTOR-HN53CB115 Brand: Carrier
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Texas CMBL #19328542014
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OEM Carrier 2-Pole Contactor 24V Coil for Model C4850C50AY05161

This is the factory-specified OEM replacement contactor for the Carrier C4850C50AY05161 packaged or split-system unit. The contactor is a high-voltage relay controlled by a low-voltage (24V) signal from the thermostat or control board. When the thermostat calls for cooling, the 24V coil energizes and closes the contactor's poles, sending 240V power to the compressor and condenser fan motor. A failed contactor is one of the most common reasons an air conditioner won't start — symptoms include the outdoor unit not responding, a buzzing or chattering noise from the contactor, burnt or pitted contact points, or the compressor running continuously with no thermostat call.

  • Specs: 2-pole configuration | 24V coil voltage | Compatible OEM part numbers: HN53CB115, HN53HF122, HN53HG120 | Factory-matched contact rating for reliable high-amperage switching
  • OEM vs Generic: OEM contactors use factory-spec silver-alloy contact tips that resist pitting and arcing far longer than generic alternatives. Mismatched coil resistance in generic units can cause chatter, premature coil burnout, and nuisance lockouts.
  • Install difficulty: 2/5 — Always disconnect power at both the indoor disconnect and outdoor disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removal. Transfer wires one at a time to avoid miswiring.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for Carrier model C4850C50AY05161. Cross-references OEM part numbers HN53CB115, HN53HF122, and HN53HG120. Verify your existing contactor's pole count, coil voltage, and amperage rating against your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you buy — order with confidence and get back up and running fast.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $99
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Contactor fit my Carrier C4850C50AY05161 | National HVAC Parts?
Yes. This is the factory-specified OEM contactor for the Carrier C4850C50AY05161 | National HVAC Parts. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the contactor on my Carrier C4850C50AY05161 | National HVAC Parts?
Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Open condensing unit panel. Step 3: Photograph ALL wiring on the contactor. Step 4: Label each wire with tape. Step 5: Disconnect wires and remove old contactor. Step 6: Mount new contactor, reconnect wires matching your photo. Step 7: Restore power and test.
My AC clicks but the compressor won’t turn on. What’s wrong?
Clicking from the outdoor unit without the compressor starting = worn contactor. The contactor sends power to the compressor. When its contacts are pitted, it clicks but can’t make solid contact. Look for: visible pitting/burn marks on the contactor face, intermittent operation, or buzzing.
Is this contactor compatible with Bryant or Payne too?
Many Carrier parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my Carrier contactor?
OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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