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OEM Carrier 40A Contactor 2-Pole 24V for CA14NA04200GAAAA — HN51KC024
Carrier

OEM Carrier 40A Contactor 2-Pole 24V for CA14NA04200GAAAA — HN51KC024

SKU: CARRIE-CA14NA04200GAAAA-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 CA14NA04200GAAAA — HN51KC024

This is the factory OEM replacement contactor (part number HN51KC024) for the Carrier CA14NA04200GAAAA split-system air conditioner. The contactor is a high-voltage relay that receives a 24V signal from the thermostat and closes the circuit to energize the compressor and condenser fan motor. When the contactor fails — due to pitted contacts, a stuck plunger, or a burned coil — the condensing unit will not respond to a cooling call, leaving you with warm air or a completely unresponsive outdoor unit.

  • Specs: 2-pole design | 24V AC coil voltage | 30–40 amp contact rating | Direct OEM replacement for Carrier part number HN51KC024 | Factory-matched contact material for long service life
  • OEM vs Generic: This OEM contactor uses factory-spec contact alloy and coil wire gauging. Generic contactors frequently use lower-grade contact surfaces that arc and pit prematurely, leading to repeat failures within a single cooling season.
  • Install difficulty: 3/5 — Always shut off power at the disconnect and verify zero voltage with a multimeter before servicing. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. Line-voltage terminals carry 208–240V — do not rush this repair.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our climate-controlled warehouse.

Compatibility: Engineered as a direct OEM drop-in replacement for the Carrier CA14NA04200GAAAA 4-ton, single-stage R-410A split-system condenser. Always confirm coil voltage and pole count on your unit's data plate before ordering. Our parts specialists are available to verify fitment — order with confidence and get your system back online fast.

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 CA14NA04200GAAAA — HN51KC024?
Yes. This is the factory-specified OEM contactor for the Carrier CA14NA04200GAAAA — HN51KC024. 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 CA14NA04200GAAAA — HN51KC024?
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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