Same-day shipping before 3PM CST · 35,000+ OEM Parts · Texas CMBL & SAM.gov Registered · Government POs Accepted

Menu

Home Shop All Account Cart
OEM Carrier Contactor 24V Coil 2-Pole for PH10JA03600GAJAA
Carrier

OEM Carrier Contactor 24V Coil 2-Pole for PH10JA03600GAJAA

SKU: CARRIE-PH10JA03600GAJAA-CONTACTOR-HN51KC024 Brand: Carrier
✓ Guaranteed to fit PH10JA03600GAJAA — 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 PH10JA03600GAJAA

This is the factory OEM replacement contactor (part number HN51KC024) for the Carrier PH10JA03600GAJAA packaged heat pump unit. The contactor is a high-voltage relay controlled by the 24V signal from your thermostat or control board. When you call for cooling or heating, the contactor closes its poles to deliver line voltage to the compressor and condenser fan motor. A failed contactor is one of the most common causes of a system that simply will not turn on — or one that runs continuously without shutting off when the contacts become fused (welded) shut.

  • Specs: 24V AC coil voltage | 2-pole design | Factory-rated amperage for Carrier PH10JA03600GAJAA | Direct OEM replacement, no modifications required
  • OEM vs Generic: This is a genuine Carrier OEM part (HN51KC024), manufactured to exact factory tolerances. Generic contactors frequently use lower-grade contact materials that pit and weld faster under high-load cycling, shortening compressor life and creating nuisance no-start callbacks.
  • Install difficulty: 3/5 — Requires shutting off both the thermostat and the main disconnect before beginning work. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, insulated gloves. Always photograph all wiring before disconnecting terminals. Verify power is off with a non-contact voltage tester before touching any leads.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier PH10JA03600GAJAA packaged heat pump. Confirm coil voltage and pole count against your unit's wiring diagram and data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — contact us anytime.

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 PH10JA03600GAJAA?
Yes. This is the factory-specified OEM contactor for the Carrier PH10JA03600GAJAA. 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 PH10JA03600GAJAA?
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.
Home Shop Search Account Cart
Fitment Guaranteed
MR
Mike Rivera
HVAC Parts Specialist — Online