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OEM Carrier Contactor 1-Pole 24V 25A for PH12NA024000ABAA
Carrier

OEM Carrier Contactor 1-Pole 24V 25A for PH12NA024000ABAA

SKU: CARRIE-PH12NA024000ABAA-CONTACTOR-HN51KB024 Brand: Carrier
✓ Guaranteed to fit PH12NA024000ABAA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Single-Pole Contactor 24V Coil 25A FLA — HN51KB024 for Model PH12NA024000ABAA

The Carrier HN51KB024 is the factory OEM single-pole contactor for the PH12NA024000ABAA heat pump system. The contactor acts as a high-voltage relay, responding to the 24V signal from your thermostat to energize the compressor and condenser fan motor. When it fails — due to worn contacts, pitting, or a burned coil — the system will either refuse to start entirely, fail to cool or heat, or run continuously without cycling off. Catching a failing contactor early prevents expensive compressor damage.

  • Specs: 1 Pole (Single Pole) | 24V 50/60Hz Coil | 25A FLA (Full Load Amps) | 30A Resistive | Factory OEM part number HN51KB024 — exact fit for PH12NA024000ABAA
  • OEM vs Generic: OEM Carrier contactors use factory-spec contact materials and coil windings, ensuring precise pull-in voltage and long service life. Generic aftermarket contactors can suffer from early contact erosion and coil burnout, risking repeat failures within one season.
  • Install Difficulty: 2/5 — Shut off all power at both the breaker and the disconnect before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removing any wires. The contactor mounts in the electrical compartment of the outdoor unit — accessible with the service panel removed.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse — order by 3PM for same-day dispatch.

Compatibility: Direct OEM replacement for Carrier model PH12NA024000ABAA. Always confirm your unit's data plate matches the 1-pole, 24V coil specification before ordering. Not sure it fits? Our HVAC parts specialists are available to verify fitment before you buy — no returns needed.

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 PH12NA024000ABAA?
Yes. This is the factory-specified OEM contactor for the Carrier PH12NA024000ABAA. 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 PH12NA024000ABAA?
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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