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OEM Carrier 40A Contactor 2-Pole 24V Coil for CA14NA02400GAAAA
Carrier

OEM Carrier 40A Contactor 2-Pole 24V Coil for CA14NA02400GAAAA

SKU: CARRIE-CA14NA02400GAAAA-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 CA14NA02400GAAAA

This OEM replacement contactor (part# HN51KC024) is the factory-specified high-voltage relay for the Carrier CA14NA02400GAAAA split-system air conditioner. The contactor acts as the main power switch between your electrical panel and the compressor and condenser fan motor — when the thermostat calls for cooling, the 24V control board energizes the contactor coil, closing the high-voltage circuit that brings the system to life. A failed contactor is one of the most common reasons an outdoor AC unit appears completely dead or hums without starting. Burned or pitted contact points, a welded-shut contactor, or a failed coil will all result in a no-cool condition.

  • Specs: 2-Pole configuration | 24V AC coil voltage | 30–40A rated contacts | Factory-matched for Carrier CA14NA02400GAAAA — verify amperage on data plate before ordering
  • OEM vs Generic: This OEM HN51KC024 contactor uses factory-grade silver-alloy contact points rated for the exact load of your system. Generic contactors frequently use lower-grade contacts that arc and pit prematurely, leading to repeat failures within a single season.
  • 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 connections before removing the old contactor.
  • Warranty: 1-year OEM factory warranty. Orders placed before 3 PM EST ship same business day from our climate-controlled warehouse.

Compatibility: Engineered specifically for the Carrier CA14NA02400GAAAA 2-ton single-stage R-410A split-system condenser. Always cross-reference the OEM part number HN51KC024 and confirm coil voltage and pole count on your unit's data plate before ordering. Our fitment team is available to verify compatibility — just reach out before you buy.

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 CA14NA02400GAAAA?
Yes. This is the factory-specified OEM contactor for the Carrier CA14NA02400GAAAA. 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 CA14NA02400GAAAA?
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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