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OEM Carrier 2-Pole Contactor 24V Coil for C4850C50AK02751 | National HVAC Parts
Carrier

OEM Carrier 2-Pole Contactor 24V Coil for C4850C50AK02751 | National HVAC Parts

SKU: CARRIE-C4850C50AK02751-CONTACTOR-HN53CB115 Brand: Carrier
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Texas CMBL #19328542014
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OEM Carrier 2-Pole Contactor 24V Coil for Model C4850C50AK02751

This OEM contactor is the factory-specified replacement for the Carrier C4850C50AK02751 packaged unit. The contactor acts as a high-voltage relay, using a low-voltage 24V signal from your thermostat to switch line-voltage power to the compressor and condenser fan motor. When the contactor fails, symptoms include an air conditioner that won't turn on despite a call for cooling, a unit that hums without the compressor engaging, or visible pitting and burning on the contact points during inspection.

  • Specs: 2-pole configuration | 24V coil voltage | Line voltage load contacts rated for compressor and fan motor duty | OEM part numbers HN53CB115, HN53HF122, HN53HG120 — factory-matched replacement
  • OEM vs Generic: OEM contactors use silver-alloy contact points to factory specification, ensuring proper contact resistance and long service life. Generic contactors frequently use lower-grade alloys that pit faster under load, leading to premature failure and potential compressor damage.
  • Install difficulty: 3/5 — Always disconnect power at the disconnect box and verify voltage is absent with a multimeter before beginning work. Tools needed: flathead and Phillips screwdrivers, 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 against defects. Orders placed by 3 PM local time ship same business day from our stocked warehouse.

Compatibility: Designed for the Carrier C4850C50AK02751 packaged unit. Cross-references OEM part numbers HN53CB115, HN53HF122, and HN53HG120. Verify coil voltage and pole configuration on your unit's data plate before ordering. Our parts specialists are available to confirm fitment — reach out before you order if you have any questions.

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 C4850C50AK02751 | National HVAC Parts?
Yes. This is the factory-specified OEM contactor for the Carrier C4850C50AK02751 | 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 C4850C50AK02751 | 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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