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OEM Carrier Contactor 1-Pole 24V 30A for PH16NC01800GAAAA
Carrier

OEM Carrier Contactor 1-Pole 24V 30A for PH16NC01800GAAAA

SKU: CARRIE-PH16NC01800GAAAA-CONTACTOR-HN51KC024 Brand: Carrier
✓ Guaranteed to fit PH16NC01800GAAAA — 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 — HN51KC024 for Model PH16NC01800GAAAA

This is the factory-authorized OEM replacement contactor for the Carrier PH16NC01800GAAAA packaged heat pump unit, carrying Carrier part number HN51KC024. The contactor is the high-voltage relay at the heart of your system's electrical switching circuit — when the 24V thermostat signal energizes its coil, the contacts close and line voltage is delivered to the compressor and/or condenser fan motor. A failed contactor is one of the most common causes of a complete no-cool or no-heat situation. Symptoms include the outdoor unit humming but not starting, the compressor running continuously even after a setpoint is reached (welded contacts), or total failure to respond to a thermostat call.

  • Specs: 1-Pole | 24 VAC coil | 30 Amps FLA | 150 Amps LRA | 50/60 Hz | Factory OEM part HN51KC024
  • OEM vs Generic: Factory Authorized Parts are engineered to meet exact Carrier tolerances for contact gap, coil pull-in voltage, and arc suppression. Generic contactors often use lower-grade contact alloys that pit faster under compressor inrush loads, leading to premature failure and potential compressor damage.
  • Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before opening the control compartment. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers. Photograph all wiring connections before disconnecting. Verify 24V coil pull-in with a multimeter after installation.
  • Warranty: 1-year OEM factory warranty. In stock and ships the same business day from our warehouse.

Compatibility: Engineered for Carrier model PH16NC01800GAAAA packaged heat pump units. Always confirm the part number against your unit's wiring diagram and data plate before ordering. Our fitment team is standing by to verify compatibility — contact us before you buy if you have any questions.

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 PH16NC01800GAAAA?
Yes. This is the factory-specified OEM contactor for the Carrier PH16NC01800GAAAA. 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 PH16NC01800GAAAA?
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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