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OEM Carrier Contactor 2-Pole 24V for CA17NA03600GBAAA — HN51KC024
Carrier

OEM Carrier Contactor 2-Pole 24V for CA17NA03600GBAAA — HN51KC024

SKU: CARRIE-CA17NA03600GBAAA-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 CA17NA03600GBAAA — HN51KC024

This is the OEM factory-replacement contactor (part number HN51KC024) for the Carrier CA17NA03600GBAAA split-system air conditioner. The contactor is the high-voltage relay that receives a 24V signal from your thermostat and closes the circuit to send line voltage to the compressor and condenser fan motor. When the contactor fails — due to worn or pitted contacts, a stuck plunger, or a burned coil — the outdoor unit will not energize even though the thermostat is calling for cooling. Common symptoms include the air handler running with no outdoor response, a buzzing or chattering sound from the contactor, or a completely dead condenser unit.

  • Specs: 2-pole design | 24V AC coil voltage | High-amperage contact rating | Direct OEM replacement for part number HN51KC024 | Factory-matched to Carrier CA17NA03600GBAAA electrical specifications
  • OEM vs Generic: OEM contactors use silver-alloy contact tips rated to factory amperage tolerances, resisting pitting and arcing far longer than generic substitutes. Inferior contacts oxidize faster, leading to repeat failures and potential compressor damage from voltage drops.
  • Install difficulty: 2/5 — Always disconnect power at the breaker and verify voltage is absent with a multimeter before proceeding. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removing the old contactor. Line-voltage terminals carry lethal current — exercise caution.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our climate-controlled warehouse.

Compatibility: Designed specifically for the Carrier CA17NA03600GBAAA condensing unit. Verify your existing contactor's pole count, coil voltage, and amperage rating against your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — order with confidence and get your system 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 CA17NA03600GBAAA — HN51KC024?
Yes. This is the factory-specified OEM contactor for the Carrier CA17NA03600GBAAA — HN51KC024. 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 CA17NA03600GBAAA — HN51KC024?
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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