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OEM Carrier 40A Contactor 2-Pole 24V Coil for CA13NA0300NGAABA
Carrier

OEM Carrier 40A Contactor 2-Pole 24V Coil for CA13NA0300NGAABA

SKU: CARRIE-CA13NA0300NGAABA-CONTACTOR-HN51KC024 Brand: Carrier

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 2-Pole Contactor 24V Coil for Model CA13NA0300NGAABA

This is the factory-specified OEM replacement contactor (part number HN51KC024) for the Carrier CA13NA0300NGAABA split-system air conditioner. The contactor is a high-voltage relay that bridges the gap between the low-voltage thermostat signal and the high-voltage power supply to the compressor and condenser fan motor. When the contactor fails — due to pitted or burnt contacts, a stuck plunger, or a failed coil — the outdoor unit simply will not energize, even when the thermostat is calling for cooling. You may hear the indoor air handler running while the outdoor unit remains completely silent.

  • Specs: 2-pole design | 24V AC coil voltage | 30–40 amp contact rating | Direct OEM replacement for part number HN51KC024 | Factory-matched coil pull-in voltage for reliable switching
  • OEM vs Generic: OEM contactors feature silver-alloy contact tips rated for thousands of switching cycles under load. Generic contactors often use inferior contact materials that pit and arc prematurely, shortening compressor life and causing nuisance lockouts.
  • Install difficulty: 3/5 — Disconnect and lock out all power before beginning. Tools needed: flathead and Phillips screwdrivers, 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter. Always photograph existing wiring before removing the old contactor. Double-check line and load terminal orientation before re-energizing.
  • Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before cut-off ship the same business day from our stocked warehouse.

Compatibility: Engineered specifically for the Carrier CA13NA0300NGAABA 2.5-ton split-system air conditioner. Verify the OEM part number HN51KC024 on your existing contactor's label or equipment data plate before ordering to confirm fitment. Not sure? Our HVAC parts specialists verify compatibility before every order — reach out 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 $75
  • 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 CA13NA0300NGAABA?
Yes. This is the factory-specified OEM contactor for the Carrier CA13NA0300NGAABA. 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 CA13NA0300NGAABA?
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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