Same-day shipping before 3PM CST · 35,000+ OEM Parts · Texas CMBL & SAM.gov Registered · Government POs Accepted

Menu

Home Shop All Account Cart
OEM Carrier Contactor 2-Pole 24V for CA13NA02400GAAAA — HN51KC024
Carrier

OEM Carrier Contactor 2-Pole 24V for CA13NA02400GAAAA — HN51KC024

SKU: CARRIE-CA13NA02400GAAAA-CONTACTOR-HN51KC024 Brand: Carrier

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 2-Pole Contactor 24V Coil for Model CA13NA02400GAAAA — HN51KC024

This is the OEM factory-specified contactor (part number HN51KC024) for the Carrier CA13NA02400GAAAA split-system air conditioner. The contactor acts as the high-voltage relay that completes the circuit between the disconnect and your compressor and condenser fan motor whenever the thermostat calls for cooling. When the contactor fails — due to pitted or burned contacts, a stuck plunger, or a failed 24V coil — the outdoor unit simply will not energize, leaving you with warm air and a running indoor blower but no cooling at the condenser.

  • Specs: 2-pole configuration | 24V AC coil voltage | Factory-rated amperage for CA13NA02400GAAAA compressor load | OEM part number HN51KC024 — direct factory match, no modifications required
  • OEM vs Generic: OEM contactors feature silver-alloy contact tips with tighter arc-suppression tolerances than generic alternatives. Generic contactors often use lower-grade contact material that pits faster under repeated inrush current, leading to premature failure and potential compressor damage.
  • Install Difficulty: 2/5 — Always shut off power at the disconnect and verify zero voltage with a multimeter before touching any wiring. Photograph all wiring connections before removal. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, non-contact voltage tester. Average replacement time: 20–30 minutes.
  • Warranty: 1-year OEM factory warranty against defects in materials and workmanship. In-stock units ship same business day from our warehouse.

Compatibility: Engineered and factory-matched for the Carrier CA13NA02400GAAAA 2-ton single-stage split-system condenser. Always confirm your unit's data plate voltage, pole count, and amperage rating match before installation. Our parts specialists are available to verify fitment before you order — 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 CA13NA02400GAAAA — HN51KC024?
Yes. This is the factory-specified OEM contactor for the Carrier CA13NA02400GAAAA — 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 CA13NA02400GAAAA — 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.
Home Shop Search Account Cart
Fitment Guaranteed
MR
Mike Rivera
HVAC Parts Specialist — Online