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Carrier

OEM Carrier Contactor C50A203551 for Model C50A203551 HVAC Unit

SKU: carrier-contactor-c50a203551 Brand: Carrier
$49.95

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

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OEM Carrier Contactor C50A203551 for Model C50A203551 HVAC Unit

The Carrier C50A203551 contactor is a genuine OEM switching device that controls line voltage to your air conditioner or heat pump's compressor and condenser fan motor. A thermostat call for cooling energizes the contactor coil, closing the contacts to power the outdoor unit; when cooling is satisfied, the contacts open to safely interrupt the circuit. Built to exact Carrier specifications for model C50A203551, it offers dependable contact engagement, accurate coil ratings, and long-lasting performance under repeated high-amperage switching. Worn contactors are among the most frequent HVAC failures—pitted or stuck contacts cause humming, chattering, or an outdoor unit that simply won't start. Swapping in this OEM part restores reliable operation. Installation is a moderate DIY repair: always disconnect power at both the breaker and the outdoor disconnect, photograph the wiring for reference, and transfer each lead to its matching terminal. Using the correct OEM contactor protects your compressor from voltage and amperage mismatches. We stock this part and ship same-day on all orders placed before 3PM CST, getting your system cooling again without delay.

Compatibility

This part is compatible with Carrier model C50A203551.

Shipping

Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.

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 $75
  • 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 support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Contactor fit my Carrier Model C50A203551 HVAC Unit?
Yes. This is the factory-specified OEM contactor for the Carrier Model C50A203551 HVAC Unit. 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 Model C50A203551 HVAC Unit?
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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