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OEM Carrier 30A Contactor 2-Pole 24V Coil HN51KC024 — CA13NA04800GAAAA
Carrier

OEM Carrier 30A Contactor 2-Pole 24V Coil HN51KC024 — CA13NA04800GAAAA

SKU: CARRIE-CA13NA04800GAAAA-CONTACTOR-HN51KC024 Brand: Carrier

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 2-Pole Contactor 24V Coil HN51KC024 for Model CA13NA04800GAAAA

This is the factory OEM contactor (part number HN51KC024) for the Carrier CA13NA04800GAAAA split-system air conditioner — a 4-ton, single-stage R-22 compatible condenser unit. The contactor is a high-voltage relay that receives a 24V signal from the thermostat and closes to allow 240V power to flow to the compressor and condenser fan motor. When the contactor fails, the most common symptoms are an AC unit that runs continuously and won't shut off (contacts welded closed), or a unit that receives a call for cooling but never starts (contacts burned open or coil failure).

  • Specs: 2-pole configuration | 24V AC coil voltage | Rated for 30A compressor load | Direct OEM replacement for Carrier part HN51KC024 | Factory-matched contact material for long service life
  • OEM vs Generic: The OEM HN51KC024 contactor uses factory-specified silver-alloy contacts rated to exact amperage loads for the CA13NA04800GAAAA. Generic contactors frequently use lower-grade contact material that pits and welds prematurely under high-cycle summer loads, leading to callbacks and repeat failures.
  • Install Difficulty: 2/5 — Always disconnect power at the disconnect box and verify zero voltage with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wire connections before removal. Swap wires one at a time to avoid miswiring the load and line terminals.
  • Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before cutoff ship same business day from our climate-controlled warehouse.

Compatibility: Engineered specifically for the Carrier CA13NA04800GAAAA 4-ton split-system condenser. Verify the OEM part number HN51KC024 on your existing contactor label or unit wiring diagram before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — call or chat today. In stock and ships today.

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 OEM Carrier 30A Contactor 2-Pole 24V Coil HN51KC024 — CA13NA04800GAAAA?
Yes. This is the factory-specified OEM contactor for the Carrier OEM Carrier 30A Contactor 2-Pole 24V Coil HN51KC024 — CA13NA04800GAAAA. 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 OEM Carrier 30A Contactor 2-Pole 24V Coil HN51KC024 — CA13NA04800GAAAA?
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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