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OEM Carrier Contactor 2-Pole 24V Coil for HC1BNX030000AAAA
Carrier

OEM Carrier Contactor 2-Pole 24V Coil for HC1BNX030000AAAA

SKU: CARRIE-HC1BNX030000AAAA-CONTACTOR-HN51KB024 Brand: Carrier
✓ Guaranteed to fit HC1BNX030000AAAA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Contactor 2-Pole 24V Coil for Model HC1BNX030000AAAA

This is the factory OEM replacement contactor (part number HN51KB024) for the Carrier HC1BNX030000AAAA air handler/condensing unit. The contactor is the high-voltage relay that receives a 24V signal from your thermostat and closes the circuit to deliver line voltage to the compressor and condenser fan motor. When the contactor fails — due to pitted or burned contacts, a stuck plunger, or a failed coil — your outdoor unit will simply not energize, leaving your system blowing warm air or failing to respond at all.

  • Specs: 2-pole design | 24V AC coil voltage | 30-amp contact rating | Direct OEM replacement for part number HN51KB024 | Factory-matched contact material for long service life
  • OEM vs Generic: This is the genuine Carrier OEM contactor, built to exact factory specifications. Generic contactors often use inferior contact alloys that pit and weld more quickly under load, leading to premature failure and potential compressor damage.
  • Install Difficulty: 2/5 — Always disconnect power at the disconnect box and verify zero voltage with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring before disconnecting terminals to ensure correct reinstallation.
  • Warranty: Backed by a 1-year OEM factory warranty. Orders placed before our daily cutoff ship the same business day from our stocked warehouse.

Compatibility: Engineered specifically for the Carrier HC1BNX030000AAAA unit. Always confirm the OEM part number HN51KB024 against your existing contactor label and verify coil voltage and pole configuration on your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — reach out before you order if you have any questions. In stock and ready to ship 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 $99
  • 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 HC1BNX030000AAAA?
Yes. This is the factory-specified OEM contactor for the Carrier HC1BNX030000AAAA. 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 HC1BNX030000AAAA?
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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