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OEM Carrier 2-Pole Contactor 24V Coil for C50A302551
Carrier

OEM Carrier 2-Pole Contactor 24V Coil for C50A302551

SKU: CARRIE-C50A302551-CONTACTOR-HN53CB115 Brand: Carrier
✓ Guaranteed to fit C50A302551 — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 2-Pole Contactor 24V Coil for Model C50A302551

This is the factory-specified OEM replacement contactor for the Carrier C50A302551 packaged unit. The contactor is a high-voltage relay controlled by your thermostat's 24V signal — when the thermostat calls for cooling, the contactor closes to send line voltage to the compressor and condenser fan motor. A failed contactor is one of the most common reasons an AC system won't start: symptoms include a unit that hums but won't run, fails to energize at all, or runs continuously without shutting off due to welded contacts. OEM part numbers covered: HN53CB115, HN53CD115, HN53HF122.

  • Specs: 2-pole configuration | 24V coil voltage | High-amperage contacts rated for compressor load | Direct OEM factory replacement with exact terminal layout and mounting dimensions
  • OEM vs Generic: OEM Carrier contactors use silver-alloy contact tips rated for the exact inrush current of your compressor. Generic contactors frequently use lower-grade contact materials that pit and weld prematurely, leading to repeat failures within one or two seasons.
  • Install difficulty: 3/5 — Disconnect all power at the breaker and verify voltage is absent with a multimeter before beginning. Tools needed: flat-head and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removing the old contactor. Line-voltage terminals are present — exercise caution.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our climate-controlled warehouse.

Compatibility: Designed for the Carrier C50A302551 commercial packaged unit. Cross-references OEM part numbers HN53CB115, HN53CD115, and HN53HF122. Confirm coil voltage and pole configuration on your unit's data plate prior to ordering. Our fitment specialists are available to verify compatibility before you purchase — no guesswork required.

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 C50A302551?
Yes. This is the factory-specified OEM contactor for the Carrier C50A302551. 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 C50A302551?
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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