What amp contactor do I need for my Carrier system?

The correct replacement for Carrier model PH11JA024000AAAA 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 PH11JA024000AAAA.

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 24V Coil 2-Pole for PH11JA024000AAAA

Name: OEM Carrier Contactor 24V Coil 2-Pole for PH11JA024000AAAA
Brand: Carrier
SKU: CARRIE-PH11JA024000AAAA-CONTACTOR-HN51KB024
Price: 31.20 USD
Availability: InStock

SKU: CARRIE-PH11JA024000AAAA-CONTACTOR-HN51KB024 Brand: Carrier

✓ Guaranteed to fit PH11JA024000AAAA — or your money back. Terms

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

OEM Carrier Contactor 24V Coil 2-Pole for Model PH11JA024000AAAA

This is the factory OEM replacement contactor (part number HN51KB024) for the Carrier PH11JA024000AAAA heat pump system. The contactor is the high-voltage relay that receives a low-voltage signal (24V AC) from the thermostat and closes to send line voltage to the compressor and condenser fan motor. When the contactor fails — due to pitted contacts, a burned coil, or a stuck plunger — the system will either fail to turn on entirely, run continuously without cycling off, or trip the breaker repeatedly.

Specs: 2-Pole configuration | 24V AC coil voltage | Rated for high-amperage compressor load | Direct OEM factory replacement for Carrier HN51KB024
OEM vs Generic: This OEM contactor is manufactured to exact Carrier factory specifications, ensuring proper coil pull-in voltage, contact gap, and amp rating. Generic contactors may use lower-grade contact alloys that pit faster under high-cycle loads, leading to premature failure.
Install difficulty: 3/5 — Always shut off power at both the disconnect box and the breaker panel before beginning work. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, wire labels or masking tape. Photograph all wiring connections before removing the old contactor. High-voltage terminals can retain charge — verify with a multimeter before touching.
Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Engineered for the Carrier PH11JA024000AAAA heat pump unit. Always verify your existing contactor's coil voltage and pole configuration against your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before every order — contact us before you buy.

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 24V Coil 2...

$31.20

Frequently Asked Questions

Does this Contactor fit my Carrier PH11JA024000AAAA?

Yes. This is the factory-specified OEM contactor for the Carrier PH11JA024000AAAA. 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 PH11JA024000AAAA?

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.

Menu

OEM Carrier Contactor 24V Coil 2-Pole for PH11JA024000AAAA

OEM Carrier Contactor 24V Coil 2-Pole for Model PH11JA024000AAAA

Shipping Information

Return Policy

Frequently Asked Questions