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OEM Carrier Contactor 1-Pole 24V 30A for PH12NA04200GAGAA
Carrier

OEM Carrier Contactor 1-Pole 24V 30A for PH12NA04200GAGAA

SKU: CARRIE-PH12NA04200GAGAA-CONTACTOR-HN51KC024 Brand: Carrier
✓ Guaranteed to fit PH12NA04200GAGAA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Single-Pole Contactor 24V 30 Amp (HN51KC024) for Model PH12NA04200GAGAA

This OEM single-pole contactor is the factory-specified replacement part for the Carrier PH12NA04200GAGAA heat pump / air conditioning system. The contactor acts as the primary high-voltage relay in the outdoor unit — when the thermostat sends a 24V signal, the contactor energizes its coil and closes the power circuit to the compressor and/or condenser fan motor. A failed contactor is one of the most common causes of an outdoor unit that simply won't turn on, hums but doesn't start, or trips the breaker repeatedly. Pitted, burned, or welded contacts are telltale signs it's time for a replacement.

  • Specs: 1-Pole (single-pole) | 24 VAC coil voltage | 30 Amp FLA (Full Load Amps) | 150 Amp LRA (Locked Rotor Amps) | 50/60 Hz | OEM Part # HN51KC024
  • OEM vs Generic: This is a genuine Carrier Factory Authorized Part, engineered to exact specifications for the PH12NA04200GAGAA. Generic contactors often use lower-grade contact materials that pit faster under load, leading to premature failure and potential compressor damage.
  • Install Difficulty: 2/5 — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. Verify contactor pull-in with a 24V thermostat call after installation.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Directly fits Carrier model PH12NA04200GAGAA. This part is also used across a broad range of Carrier, Bryant, and Payne residential and light-commercial units rated up to 5 tons (60,000 BTU). Always verify the part number on your unit's wiring diagram or parts list before ordering. Need help confirming fitment? Our HVAC parts team is ready to assist 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 PH12NA04200GAGAA?
Yes. This is the factory-specified OEM contactor for the Carrier PH12NA04200GAGAA. 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 PH12NA04200GAGAA?
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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