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OEM Payne Contactor 2-Pole 24V Coil for PA12NA024000ACAA
Payne

OEM Payne Contactor 2-Pole 24V Coil for PA12NA024000ACAA

SKU: PAYNE-PA12NA024000ACAA-CONTACTOR-HN51KB024 Brand: Payne

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

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OEM Payne 2-Pole Contactor 24V Coil for Model PA12NA024000ACAA

This is the OEM factory-replacement contactor (part number HN51KB024) for the Payne PA12NA024000ACAA split-system air conditioner. The contactor acts as the primary high-voltage relay in your condensing unit — when the thermostat calls for cooling, the 24V control circuit energizes the contactor coil, closing the contacts and delivering line voltage to both the compressor and condenser fan motor. When the contactor fails, the result is typically a complete no-cool condition: the indoor air handler runs normally, but nothing happens at the outdoor unit. Pitted, burned, or welded contacts are the most common failure modes, and they can also cause the compressor to run continuously even when cooling is not called for.

  • Specs: 2-pole configuration | 24V AC coil voltage | 30–40A contact rating | Direct OEM replacement — matches factory wiring and mounting dimensions for the PA12NA024000ACAA
  • OEM vs Generic: The OEM HN51KB024 contactor uses factory-grade contact materials and coil windings rated to exact Payne specifications. Generic contactors may carry looser amperage tolerances and thinner contact surfaces, increasing the risk of premature pitting and compressor damage over time.
  • Install difficulty: 2/5 — Shut off 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. Swap wires one at a time to avoid miswiring.
  • Warranty: 1-year OEM factory warranty. In-stock units ship same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Engineered as a direct OEM replacement for the Payne PA12NA024000ACAA split-system condenser. Always confirm coil voltage (24V) and pole configuration against your unit's wiring diagram and data plate before ordering. Our HVAC parts specialists are available to verify fitment before you purchase — fast, free, and accurate.

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

Frequently Asked Questions

Does this Contactor fit my Payne PA12NA024000ACAA?
Yes. This is the factory-specified OEM contactor for the Payne PA12NA024000ACAA. 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 Payne PA12NA024000ACAA?
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 Payne 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 Payne 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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