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OEM Carrier Contactor 24V Coil 2-Pole for PH10JA024000AEAA
Carrier

OEM Carrier Contactor 24V Coil 2-Pole for PH10JA024000AEAA

SKU: CARRIE-PH10JA024000AEAA-CONTACTOR-HN51KB024 Brand: Carrier
✓ Guaranteed to fit PH10JA024000AEAA — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Contactor 24V Coil 2-Pole for Model PH10JA024000AEAA

This is the factory OEM replacement contactor (part number HN51KB024) for the Carrier PH10JA024000AEAA heat pump system. The contactor is a high-voltage relay that acts as the main electrical switch between your thermostat's low-voltage control signal and the compressor and condenser fan motor's high-voltage power supply. When the thermostat calls for cooling or heating, the 24V coil energizes and closes the contacts, allowing 240V power to flow to the compressor and fan. A failed contactor is one of the most common reasons an outdoor unit will not start — symptoms include a system that hums but won't run, burnt or pitted contact points visible on inspection, or a unit that runs continuously without cycling off.

  • Specs: 24V coil voltage | 2-pole design | Factory-matched contact rating | Direct OEM replacement for part number HN51KB024
  • OEM vs Generic: This OEM contactor is manufactured to Carrier's exact contact gap, coil pull-in voltage, and ampacity specifications. Generic aftermarket contactors often use lower-grade contact alloys that pit and weld faster under load, shortening service life significantly.
  • Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Always photograph existing wiring before disconnecting any terminals. Verify coil voltage matches your control circuit before energizing.
  • Warranty: 1-year OEM factory warranty against defects. Orders ship same business day when placed before 3PM local time from our stocked warehouse.

Compatibility: Designed as the direct OEM replacement for Carrier model PH10JA024000AEAA heat pump systems. Confirm existing contactor pole count, coil voltage, and amperage rating from your unit's data plate or existing part label before ordering. Our HVAC parts specialists are available to verify fitment — contact us before you order if you have any questions.

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 PH10JA024000AEAA?
Yes. This is the factory-specified OEM contactor for the Carrier PH10JA024000AEAA. 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 PH10JA024000AEAA?
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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