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OEM Carrier Contactor 1-Pole 24V 30A for PH12NA04800GAGAA
Carrier

OEM Carrier Contactor 1-Pole 24V 30A for PH12NA04800GAGAA

SKU: CARRIE-PH12NA04800GAGAA-CONTACTOR-HN51KC024 Brand: Carrier
✓ Guaranteed to fit PH12NA04800GAGAA — 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 24V 30A for Model PH12NA04800GAGAA (HN51KC024)

This is the genuine OEM Carrier contactor (part# HN51KC024), the factory-specified high-voltage relay for the Carrier PH12NA04800GAGAA packaged heat pump unit. The contactor acts as the primary electrical switch in the outdoor unit's control circuit — when the thermostat sends a 24V signal, the contactor coil energizes, closes the high-voltage contacts, and delivers power to the compressor and/or condenser fan motor. When the contactor fails, common symptoms include the system not turning on at all, the compressor humming but not starting, contacts welding shut causing the unit to run continuously, or visible pitting and burning on the contact surfaces.

  • Specs: 1-Pole configuration | 24 VAC coil voltage | 30A Full Load Amps (FLA) | 150A Locked Rotor Amps (LRA) | 50/60 Hz | OEM Part# HN51KC024
  • OEM vs Generic: This genuine Carrier Factory Authorized Part is built to exact factory specifications for the PH12NA04800GAGAA, ensuring proper coil pull-in voltage, contact gap, and amp rating. Generic contactors may use undersized contacts or off-spec coil resistance, leading to premature failure or nuisance tripping.
  • Install Difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Always photograph existing wiring before removing any terminals. Verify 24V coil pull-in after installation with a thermostat call.
  • Warranty & Shipping: Backed by a 1-year OEM factory warranty. In-stock orders ship same business day from our warehouse.

Compatibility: Confirmed fit for Carrier model PH12NA04800GAGAA packaged heat pump. Also widely used across Carrier, Bryant, and Payne residential and light-commercial AC and heat pump systems rated up to 5 tons (60,000 BTU) that specify HN51KC024 in the official parts list. Always verify your unit's parts list or data plate before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy.

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 PH12NA04800GAGAA?
Yes. This is the factory-specified OEM contactor for the Carrier PH12NA04800GAGAA. 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 PH12NA04800GAGAA?
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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