What amp contactor do I need for my Carrier system?

The correct replacement for Carrier model Model HA1BJX024000ACAA is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Carrier equipment which lists the model number Model HA1BJX024000ACAA.

My AC clicks but the compressor does not turn on. What is wrong?

Clicking from the outdoor unit without the compressor starting usually means a worn contactor. The contactor is the relay that sends power to the compressor. When its contacts are pitted or worn, it clicks but cannot establish a solid electrical connection. Other symptoms: visible pitting or burn marks on the contactor face, AC works intermittently, or buzzing from the contactor.

Is this contactor compatible with Bryant or Payne systems too?

Many Carrier parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

Carrier

OEM Carrier Contactor HN51KC024 for Model HA1BJX024000ACAA

Name: OEM Carrier Contactor HN51KC024 for Model HA1BJX024000ACAA
Brand: Carrier
SKU: carrier-contactor-ha1bjx024000acaa
Price: 82.95 USD
Availability: InStock

SKU: carrier-contactor-ha1bjx024000acaa Brand: Carrier

✓ Guaranteed to fit HA1BJX024000ACAA — or your money back. Terms

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OEM Carrier Contactor HN51KC024 for Model HA1BJX024000ACAA

This OEM Carrier definite purpose contactor (HN51KC024) is the electrical switch that energizes your condenser's compressor and outdoor fan motor whenever the thermostat calls for cooling. Engineered specifically for the Carrier HA1BJX024000ACAA 2-ton condensing unit, it delivers reliable 24V coil control and durable silver-alloy contacts rated to handle repeated high-amperage cycling without pitting or chatter. A worn contactor is one of the most common causes of a unit that hums but won't start, or that fails to shut off. Replacement is a straightforward repair for any HVAC technician—simply disconnect power, photograph the wiring, transfer leads to the matching terminals, and remount. Most installs take under 30 minutes. Using a genuine Carrier part guarantees exact coil voltage, pole configuration, and amp rating, protecting your compressor investment and maintaining warranty compliance. We stock this contactor in our warehouse and ship same-day on all orders placed before 3PM CST, so your system is back to cooling fast. Order with confidence from National HVAC Parts.

Compatibility

This part is compatible with Carrier model HA1BJX024000ACAA.

Shipping

Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.

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

OEM Carrier Contactor HN51KC024 ...

$82.95

Frequently Asked Questions

Does this Contactor fit my Carrier Model HA1BJX024000ACAA?

Yes. This is the factory-specified OEM contactor for the Carrier Model HA1BJX024000ACAA. 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 Model HA1BJX024000ACAA?

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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OEM Carrier Contactor HN51KC024 for Model HA1BJX024000ACAA

OEM Carrier Contactor HN51KC024 for Model HA1BJX024000ACAA

Compatibility

Shipping

Shipping Information

Return Policy

Frequently Asked Questions