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OEM Carrier Contactor 24V Coil 2-Pole for PH10JA030000ADAA
Carrier

OEM Carrier Contactor 24V Coil 2-Pole for PH10JA030000ADAA

SKU: CARRIE-PH10JA030000ADAA-CONTACTOR-HN51KB024 Brand: Carrier
✓ Guaranteed to fit PH10JA030000ADAA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Contactor 24V Coil 2-Pole for Model PH10JA030000ADAA

This OEM contactor (part number HN51KB024) is the factory-specified high-voltage relay for the Carrier PH10JA030000ADAA system. The contactor acts as the primary switching device that allows the 24V control board signal to energize the high-voltage compressor and condenser fan circuits. When it fails, the most common symptom is an air conditioning system that simply won't turn on — the thermostat calls for cooling but nothing happens. Worn or pitted contacts can also cause intermittent operation, chattering, or the compressor running continuously even after the thermostat is satisfied.

  • Specs: 24V AC coil | 2-pole design | Factory-matched contact rating | Direct OEM replacement for part number HN51KB024
  • OEM vs Generic: OEM contactors use silver-alloy contact tips rated to factory arc-interruption specs. Generic contactors often use inferior contact materials that pit quickly under high-inrush compressor loads, leading to premature failure within a single season.
  • Install difficulty: 2/5 — Always shut off power at the disconnect and the breaker panel before servicing. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removal to ensure correct reassembly.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for Carrier model PH10JA030000ADAA. Verify coil voltage and pole configuration on your unit's data plate before ordering. Our technical team is available to confirm fitment — reach out before you buy for peace of mind.

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 PH10JA030000ADAA?
Yes. This is the factory-specified OEM contactor for the Carrier PH10JA030000ADAA. 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 PH10JA030000ADAA?
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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