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OEM Carrier 40A Contactor 2-Pole 24V Coil for CA14NA03000GAAAA
Carrier

OEM Carrier 40A Contactor 2-Pole 24V Coil for CA14NA03000GAAAA

SKU: CARRIE-CA14NA03000GAAAA-CONTACTOR-HN51KC024 Brand: Carrier

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 2-Pole Contactor 24V Coil for Model CA14NA03000GAAAA

This is the OEM factory-specified contactor (part number HN51KC024) for the Carrier CA14NA03000GAAAA split-system air conditioner. The contactor is a high-voltage relay that receives a 24V signal from the thermostat and closes to allow 240V power to flow to the compressor and condenser fan motor. When it fails, the most common symptoms include the outdoor unit not turning on at all, the unit running continuously without cycling off, or visible pitting and burning on the contact points.

  • Specs: 2-pole configuration | 24V AC coil voltage | 240V load voltage | 30–40A contact rating | Direct OEM replacement for part number HN51KC024
  • OEM vs Generic: OEM contactors use silver-alloy contact points rated to factory specifications, ensuring reliable switching and longer service life. Generic contactors often use lower-grade contacts that pit and weld faster under load, causing premature failure and potential compressor damage.
  • Install Difficulty: 2/5 — Always shut off power at the disconnect box AND the breaker before servicing. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring before disconnecting terminals. A multimeter check of coil voltage (24V) and contact continuity will confirm diagnosis before replacement.
  • Warranty: 1-year OEM factory warranty. In-stock units ship same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed as a direct OEM replacement for the Carrier CA14NA03000GAAAA split-system condenser. Always verify the coil voltage and pole configuration on your unit's data plate and existing contactor before ordering. Our fitment team is available to confirm compatibility — just reach out before you buy. Order today and get your system back up and running fast with same-day shipping available.

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

Frequently Asked Questions

Does this Contactor fit my Carrier CA14NA03000GAAAA?
Yes. This is the factory-specified OEM contactor for the Carrier CA14NA03000GAAAA. 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 CA14NA03000GAAAA?
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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