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OEM Carrier 2-Pole Contactor 24V Coil for HA1BJX036000ABAA
Carrier

OEM Carrier 2-Pole Contactor 24V Coil for HA1BJX036000ABAA

SKU: CARRIE-HA1BJX036000ABAA-CONTACTOR-HN51KB024 Brand: Carrier
✓ Guaranteed to fit HA1BJX036000ABAA — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier 2-Pole Contactor 24V Coil for Model HA1BJX036000ABAA

This is the factory OEM replacement contactor (part number HN51KB024) for the Carrier HA1BJX036000ABAA split-system air conditioner. The contactor is a high-voltage relay controlled by the thermostat's 24V signal. When your thermostat calls for cooling, the contactor closes its contacts to send line voltage to the compressor and condenser fan motor. A failed contactor is one of the most common causes of an air conditioner that hums but won't start, runs constantly without cycling off, or simply will not turn on at all. Pitted or burned contacts are a telltale sign of contactor failure and can be visually confirmed during inspection.

  • Specs: 2-pole configuration | 24V AC coil voltage | Factory-rated amperage for 3-ton (036) class condensers | Direct OEM replacement per Carrier part number HN51KB024
  • OEM vs Generic: This OEM unit meets Carrier's exact coil pull-in voltage and contact ampacity specs. Aftermarket contactors frequently use lower-grade contact material that pits faster under high-cycle loads, leading to premature failure and potential compressor damage.
  • Install Difficulty: 2/5 — Always disconnect power at the disconnect box and verify zero voltage with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removal to ensure correct reinstallation.
  • Warranty: 1-year OEM factory warranty. Orders placed before our same-day shipping cutoff ship from our warehouse today.

Compatibility: Engineered specifically for the Carrier HA1BJX036000ABAA condenser unit. Always verify your unit's data plate voltage and amperage ratings match this contactor's specifications before installation. Our fitment team is available to confirm compatibility before you order — no guesswork required.

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 $99
  • 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 HA1BJX036000ABAA?
Yes. This is the factory-specified OEM contactor for the Carrier HA1BJX036000ABAA. 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 HA1BJX036000ABAA?
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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