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OEM Carrier Contactor 24V Coil 2-Pole for PH10JA030000AGAA
Carrier

OEM Carrier Contactor 24V Coil 2-Pole for PH10JA030000AGAA

SKU: CARRIE-PH10JA030000AGAA-CONTACTOR-HN51KB024 Brand: Carrier
✓ Guaranteed to fit PH10JA030000AGAA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Contactor 24V Coil 2-Pole for Model PH10JA030000AGAA

This OEM contactor (part number HN51KB024) is the factory-specified replacement for the Carrier PH10JA030000AGAA packaged heat pump unit. The contactor is a high-voltage relay controlled by the 24V thermostat signal — when your thermostat calls for cooling or heating, the contactor closes to send line voltage to the compressor and condenser fan motor. When a contactor fails, symptoms include an AC or heat pump that simply won't energize, a system that runs continuously without shutting off, or visible pitting and burning on the contact surfaces causing intermittent operation.

  • Specs: OEM Part No. HN51KB024 | 2-Pole design | 24V coil voltage | Factory-matched contact rating for Carrier PH10JA030000AGAA — verify amperage on your unit's data plate before ordering
  • OEM vs Generic: OEM contactors use silver-alloy contact tips rated for thousands of switching cycles. Generic alternatives often use lower-grade contacts that pit and arc faster, leading to premature failure and potential compressor damage from voltage drop.
  • Install difficulty: 3/5 — Always shut off power at both the disconnect box and breaker panel before servicing. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removing the old contactor. Line-voltage terminals remain energized at the line side even when the unit is off — confirm power is fully disconnected.
  • Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders ship same business day from our warehouse when placed before cutoff.

Compatibility: Designed as a direct OEM replacement for Carrier model PH10JA030000AGAA packaged heat pump systems. Always cross-reference the part number on the existing contactor label and verify coil voltage and pole configuration match before installation. Our fitment specialists are available to confirm compatibility before you order — reach out via chat or phone.

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 PH10JA030000AGAA?
Yes. This is the factory-specified OEM contactor for the Carrier PH10JA030000AGAA. 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 PH10JA030000AGAA?
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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