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OEM Carrier Contactor 24V Coil 2-Pole for PY3GNA030040AB
Carrier

OEM Carrier Contactor 24V Coil 2-Pole for PY3GNA030040AB

SKU: CARRIE-PY3GNA030040AB-CONTACTOR-HN51KB024 Brand: Carrier
✓ Guaranteed to fit PY3GNA030040AB — 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 PY3GNA030040AB

This is the factory OEM replacement contactor (part number HN51KB024) for the Carrier PY3GNA030040AB packaged unit. The contactor is a high-voltage relay controlled by your thermostat's 24V signal — it switches line voltage to the compressor and condenser fan motor every time a cooling call is made. When the contactor fails, the most common symptoms include the outdoor unit failing to energize at all, intermittent cooling loss, or visible pitting and burning on the contact points.

  • Specs: 2-pole configuration | 24V control coil | Factory-rated amperage for Carrier PY3GNA030040AB | Direct OEM replacement for part number HN51KB024
  • OEM vs Generic: This OEM contactor is manufactured to exact Carrier factory specifications, including contact material grade and coil pull-in voltage tolerance. Generic contactors may use lower-grade silver-alloy contacts that pit faster under load cycling, shortening service life.
  • Install Difficulty: 2/5 — Always disconnect power at the disconnect box and confirm voltage is zero with a multimeter before touching any terminals. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring before removal.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Designed as a direct drop-in replacement for Carrier model PY3GNA030040AB. Always verify coil voltage and pole configuration against your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork required.

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 PY3GNA030040AB?
Yes. This is the factory-specified OEM contactor for the Carrier PY3GNA030040AB. 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 PY3GNA030040AB?
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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