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OEM Carrier Contactor 24V 2-Pole for PY3PNA024040NA — HN51KB024
Carrier

OEM Carrier Contactor 24V 2-Pole for PY3PNA024040NA — HN51KB024

SKU: CARRIE-PY3PNA024040NA-CONTACTOR-HN51KB024 Brand: Carrier
✓ Guaranteed to fit HN51KB024 — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Contactor 24V 2-Pole for Model PY3PNA024040NA (HN51KB024)

This is the factory OEM replacement contactor for the Carrier PY3PNA024040NA packaged unit. The contactor is the high-voltage relay that closes the circuit between line voltage and your compressor and condenser fan motor when the thermostat calls for cooling. A failed contactor is one of the most common causes of a system that powers on at the thermostat but produces no cooling — often accompanied by a buzzing or chattering sound at the outdoor unit, or complete silence with no compressor response.

  • Specs: 2-Pole | 24V coil voltage | Factory-rated amperage for Carrier PY3PNA024040NA | OEM part number HN51KB024 | Direct drop-in replacement, no modification required
  • OEM vs Generic: This is a genuine OEM Carrier contactor manufactured to exact factory specifications. OEM contactors feature precision contact tips rated for the correct inrush and running current of your specific unit — generic substitutes often use lower-grade contact materials that pit and burn faster, leading to premature failure and potential compressor damage.
  • Install difficulty: 2/5 — Always disconnect power at the breaker AND verify zero voltage with a multimeter before touching any terminals. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, non-contact voltage tester. Photograph all wiring connections before removal.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed specifically for the Carrier PY3PNA024040NA packaged unit. Always verify coil voltage and pole configuration on your unit's data plate before ordering. Our parts specialists are available to confirm 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 PY3PNA024040NA — HN51KB024?
Yes. This is the factory-specified OEM contactor for the Carrier PY3PNA024040NA — HN51KB024. 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 PY3PNA024040NA — HN51KB024?
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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