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OEM Carrier Contactor 1-Pole 30A 24V for PH12NA04800GADAA
Carrier

OEM Carrier Contactor 1-Pole 30A 24V for PH12NA04800GADAA

SKU: CARRIE-PH12NA04800GADAA-CONTACTOR-HN51KC024 Brand: Carrier
✓ Guaranteed to fit PH12NA04800GADAA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Single-Pole Contactor 1-Pole 30A 24V Coil — HN51KC024 for Model PH12NA04800GADAA

This is the genuine OEM Carrier contactor (part number HN51KC024), the factory-specified high-voltage relay for the Carrier PH12NA04800GADAA packaged heat pump unit. The contactor acts as the main switching relay in the outdoor unit's control circuit, receiving a 24V signal from the thermostat and closing the high-voltage circuit to energize the compressor and/or condenser fan motor. When the contactor fails — due to pitted contacts, a burned or open coil, or contacts welded shut — the system will either refuse to turn on entirely or run continuously without responding to thermostat calls.

  • Specs: 1-Pole configuration | 24 VAC coil voltage | 30A Full Load Amps (FLA) | 150A Locked Rotor Amps (LRA) | 50/60 Hz rated | Factory OEM part number HN51KC024
  • OEM vs Generic: This is a genuine Carrier Factory Authorized Part, engineered to meet exact Carrier Corporation specifications for pull-in voltage, contact material, and contact gap. Generic aftermarket contactors may meet the basic electrical spec but often use lower-grade contact alloys that pit and weld faster under compressor cycling loads.
  • Install difficulty: 2/5 — Always disconnect power at the disconnect box before opening the control compartment. Photograph all wiring before removing any terminals. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V coil signal and confirm contact continuity). Follow the unit wiring diagram for line, load, and coil lead connections, then verify contactor pull-in with a live 24V thermostat call before closing the panel.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Factory-specified replacement contactor for Carrier model PH12NA04800GADAA packaged heat pump. Also cross-references to Bryant, Payne, and other ICP-family units that list HN51KC024 on the official parts list. Always verify your unit's data plate and parts list before ordering — if you need help confirming fitment, our HVAC parts specialists are standing by.

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 PH12NA04800GADAA?
Yes. This is the factory-specified OEM contactor for the Carrier PH12NA04800GADAA. 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 PH12NA04800GADAA?
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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