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Carrier

OEM Carrier Contactor C50A402551 for Model C50A402551

SKU: carrier-contactor-c50a402551 Brand: Carrier
$44.95

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

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OEM Carrier Contactor C50A402551 for Model C50A402551

This genuine OEM Carrier contactor (C50A402551) is the electrically operated switch that controls power to your HVAC system's compressor and condenser fan motor. When your thermostat calls for cooling, the contactor's coil energizes and closes the contacts, sending line voltage to the outdoor unit. Worn or pitted contacts cause hard starts, humming, chattering, or a unit that won't run at all. This contactor is engineered to the exact specifications of Carrier model C50A402551, ensuring proper amperage rating, coil voltage, and pole configuration for a true plug-in match. Installation is a moderate DIY job for anyone comfortable working around electrical components: shut off power at the disconnect, photograph the wiring, transfer leads one at a time, and mount the new unit. Most repairs take under 30 minutes with basic hand tools. Using the factory OEM part protects your warranty and restores reliable, safe operation. In stock and ships same-day when ordered before 3PM CST, so you can get your system cooling again fast. Backed by our HVAC parts specialists.

Compatibility

This part is compatible with Carrier model C50A402551.

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 C50A402551?
Yes. This is the factory-specified OEM contactor for the Carrier Model C50A402551. 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 C50A402551?
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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