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OEM Carrier Contactor 2-Pole 24V Coil for HB1CJX024000AAAA
Carrier

OEM Carrier Contactor 2-Pole 24V Coil for HB1CJX024000AAAA

SKU: CARRIE-HB1CJX024000AAAA-CONTACTOR-HN51KB024 Brand: Carrier
✓ Guaranteed to fit HB1CJX024000AAAA — 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 HB1CJX024000AAAA

This is the OEM factory-specified contactor (part number HN51KB024) for the Carrier HB1CJX024000AAAA condensing unit. The contactor is a high-voltage relay that acts as the main electrical switch between your thermostat's 24V control signal and the 240V power feeding the compressor and condenser fan motor. When the thermostat calls for cooling, the 24V coil energizes and closes the contacts to start the system. A failed contactor is one of the most common reasons an air conditioner won't respond to a cooling call — symptoms include the outdoor unit not starting, audible buzzing or chattering at the contactor, or burned/pitted contact points visible on inspection.

  • Specs: 2-pole configuration | 24V AC coil voltage | Rated for 240V high-voltage load | Factory OEM part number HN51KB024 | Direct drop-in replacement
  • OEM vs Generic: OEM contactors use silver-alloy contact tips rated to exact factory amperage specs. Generic contactors often use lower-grade contacts that pit and weld prematurely, leading to repeat failures within one season.
  • Install Difficulty: 2/5 — Shut off power at both the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. Transfer wires one at a time to avoid miswiring.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our climate-controlled parts warehouse.

Compatibility: Designed specifically for the Carrier HB1CJX024000AAAA condensing unit. Always verify your existing contactor's pole count, coil voltage, and amperage rating against your unit's data plate before ordering. Our parts specialists are available to confirm fitment — contact us 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 HB1CJX024000AAAA?
Yes. This is the factory-specified OEM contactor for the Carrier HB1CJX024000AAAA. 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 HB1CJX024000AAAA?
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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