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OEM Carrier 40A Contactor 2-Pole 24V Coil HN51KC024 — CA13NA030BNGADBA
Carrier

OEM Carrier 40A Contactor 2-Pole 24V Coil HN51KC024 — CA13NA030BNGADBA

SKU: CARRIE-CA13NA030BNGADBA-CONTACTOR-HN51KC024 Brand: Carrier

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 2-Pole Contactor HN51KC024 for Model CA13NA030BNGADBA

This is the factory OEM replacement contactor for the Carrier CA13NA030BNGADBA split-system air conditioner (2.5-ton, R-410A, 13 SEER). The contactor is a high-voltage relay that bridges the thermostat's 24V control signal to the 240V power that energizes the compressor and condenser fan motor. When a contactor fails — due to pitted contacts, a stuck plunger, or a burned coil — your outdoor unit will either refuse to start entirely, run continuously without cycling off, or trip the breaker repeatedly. Replacing it promptly protects the compressor from damaging voltage irregularities.

  • Specs: 2-pole configuration | 24V AC coil voltage | 30–40 amp contact rating | Fits standard 40mm contactor footprint | OEM part number HN51KC024
  • OEM vs Generic: This OEM contactor uses factory-spec silver-alloy contacts rated for the exact load profile of the CA13NA030BNGADBA compressor. Generic aftermarket contactors may use lower-grade contacts that pit or weld shut faster, risking a locked-on compressor and costly secondary damage.
  • Install Difficulty: 2/5 — Shut off power at both the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter (to verify 0V before touching terminals). Photograph all wiring before removal — line and load terminals must not be swapped.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed by 3 PM EST ship same business day from our climate-controlled warehouse.

Compatibility: Direct OEM replacement for Carrier model CA13NA030BNGADBA split-system condensers. Cross-reference your existing contactor's pole count, coil voltage, and amperage rating against the data plate before ordering. Our fitment team is available to verify compatibility — contact us before you order if you have any questions. In stock and ready to ship today.

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 OEM Carrier 40A Contactor 2-Pole 24V Coil HN51KC024 — CA13NA030BNGADBA?
Yes. This is the factory-specified OEM contactor for the Carrier OEM Carrier 40A Contactor 2-Pole 24V Coil HN51KC024 — CA13NA030BNGADBA. 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 OEM Carrier 40A Contactor 2-Pole 24V Coil HN51KC024 — CA13NA030BNGADBA?
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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