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OEM Carrier 2-Pole Contactor 24V Coil for C50A503051
Carrier

OEM Carrier 2-Pole Contactor 24V Coil for C50A503051

SKU: CARRIE-C50A503051-CONTACTOR-HN53CB115 Brand: Carrier
✓ Guaranteed to fit C50A503051 — 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 C50A503051

This OEM contactor is the factory-specified replacement for the Carrier C50A503051 packaged unit. The contactor is a high-voltage relay controlled by the 24V thermostat signal — when your 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 causes of an air conditioner that hums but won't start, trips the breaker, or simply refuses to turn on at all. Pitted or burned contacts are a clear sign of contactor failure and should be replaced promptly to protect the compressor.

  • Specs: 2-pole configuration | 24V coil voltage | High-amperage contacts | Direct OEM replacement — part numbers HN53CB115, HN53CD115, HN53HF122, HN53HG120
  • OEM vs Generic: OEM contactors use factory-grade silver-alloy contact tips rated for thousands of switching cycles. Generic contactors often use lower-grade alloys that pit and burn faster, risking compressor damage and premature failure.
  • Install difficulty: 2/5 — Always disconnect power at the disconnect box and verify voltage is absent with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring before removing the old contactor. Line-voltage terminals are present — exercise caution at all times.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Fits Carrier model C50A503051 commercial packaged units. Cross-references OEM part numbers HN53CB115, HN53CD115, HN53HF122, and HN53HG120 — verify your existing part number or unit data plate before ordering to confirm the correct amperage rating. Our HVAC parts specialists are available to verify fitment prior to purchase. In stock and ships today.

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 C50A503051?
Yes. This is the factory-specified OEM contactor for the Carrier C50A503051. 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 C50A503051?
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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Mike Rivera
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