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 PY1PNA042080ACBA
Carrier

OEM Carrier Contactor 24V Coil 2-Pole for PY1PNA042080ACBA

SKU: CARRIE-PY1PNA042080ACBA-CONTACTOR-HN51KB024 Brand: Carrier
✓ Guaranteed to fit PY1PNA042080ACBA — 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 PY1PNA042080ACBA

This OEM contactor (part number HN51KB024) is the factory-specified replacement for the Carrier PY1PNA042080ACBA packaged unit. The contactor is a high-voltage relay that acts as the primary switch between your thermostat's 24V control signal and the high-voltage power delivered to the compressor and condenser fan motor. When the contactor fails — due to burned or pitted contacts, a stuck plunger, or a failed coil — the unit will not respond to a call for cooling, leaving the system completely dead or causing it to run continuously without cycling off.

  • Specs: 2-pole design | 24V control coil | Factory-rated amperage for Carrier PY1PNA042080ACBA | OEM part number HN51KB024 | Direct drop-in replacement with no modifications required
  • OEM vs Generic: OEM contactors feature factory-grade contact material and precise coil calibration. Generic alternatives often use lower-grade silver alloy contacts that pit and oxidize faster, leading to premature failure and potential compressor damage.
  • Install Difficulty: 3/5 — Always shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, and electrical tape. Photograph all wiring connections before disconnecting the old contactor to ensure correct reinstallation.
  • Warranty: 1-year OEM factory warranty. Orders ship same business day from our warehouse when placed before cutoff.

Compatibility: Engineered specifically for the Carrier PY1PNA042080ACBA packaged unit. Always verify your existing contactor's pole configuration, coil voltage, and amperage rating against your unit's data plate before ordering. Our technical team is 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 PY1PNA042080ACBA?
Yes. This is the factory-specified OEM contactor for the Carrier PY1PNA042080ACBA. 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 PY1PNA042080ACBA?
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