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OEM Carrier 40A Contactor 2-Pole 24V Coil for CA13NA0240NGAAAA
Carrier

OEM Carrier 40A Contactor 2-Pole 24V Coil for CA13NA0240NGAAAA

SKU: CARRIE-CA13NA0240NGAAAA-CONTACTOR-HN51KC024 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier 2-Pole Contactor HN51KC024 for Model CA13NA0240NGAAAA

This is the factory OEM replacement contactor (part number HN51KC024) for the Carrier CA13NA0240NGAAAA split-system air conditioner. The contactor is the high-voltage relay that receives a 24V signal from the thermostat and closes the circuit to send 240V power to the compressor and condenser fan motor. When the contactor fails — due to pitted contacts, a stuck plunger, or a burned coil — your outdoor unit will not energize at all, or it may run continuously even when cooling is not called for. Replacing a worn contactor is one of the most common and cost-effective AC repairs available.

  • Specs: 2-pole design | 24V AC coil voltage | 30–40A rating | Fits standard 2-pole contactor footprint | OEM part number HN51KC024
  • OEM vs Generic: OEM contactors use factory-spec silver-alloy contact tips rated for the exact load cycles of your Carrier system. Generic contactors often use lower-grade alloys that pit and arc faster, leading to repeat failures within one to two seasons.
  • Install difficulty: 2/5 — Always shut off power at both the disconnect box and the breaker before beginning work. Tools needed: flat-head and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers. Photograph all wiring connections before removal. Swap wires one at a time to avoid miswiring.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed by 3PM local time ship same business day from our climate-controlled warehouse.

Compatibility: Designed and factory-specified for the Carrier CA13NA0240NGAAAA split-system condenser. Always confirm coil voltage and pole count on your unit's data plate before ordering. Our HVAC parts specialists are available to verify fitment before you complete your purchase — same-day shipping means your system is back online fast.

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 CA13NA0240NGAAAA?
Yes. This is the factory-specified OEM contactor for the Carrier CA13NA0240NGAAAA. 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 CA13NA0240NGAAAA?
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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