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OEM Carrier Contactor 1-Pole 24V 30A for PY4GNAA36090AA
Carrier

OEM Carrier Contactor 1-Pole 24V 30A for PY4GNAA36090AA

SKU: CARRIE-PY4GNAA36090AA-CONTACTOR-HN51KC024 Brand: Carrier
✓ Guaranteed to fit PY4GNAA36090AA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 1-Pole Contactor 30 Amp 24V — HN51KC024 for Model PY4GNAA36090AA

This OEM contactor (part# HN51KC024) is the factory-specified replacement for the Carrier PY4GNAA36090AA packaged unit. The contactor is a high-voltage relay that physically closes the circuit to send line voltage to the compressor and/or condenser fan motor whenever the 24V thermostat signal calls for cooling. When the contactor fails — through burned contacts, pitted surfaces, a stuck plunger, or an open coil — the system will not respond to cooling calls, leaving you with a unit that hums but won't start, or one that doesn't respond at all.

  • Specs: 1-Pole configuration | 24 VAC coil voltage | 30A Full Load Amps (FLA) | 150A Locked Rotor Amps (LRA) | 50/60 Hz | OEM part# HN51KC024
  • OEM vs Generic: This is a genuine Carrier Factory Authorized Part, engineered to exact factory tolerances. Generic contactors often use lower-grade contact materials that pit and weld faster under cycling loads, shortening overall system life.
  • Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removal — coil polarity matters. Verify 24V coil pull-in after installation with a cooling call from the thermostat.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PY4GNAA36090AA. Also cross-references to P282-0311, HN51CC024, P282-1304, P282-1305, 72930DP1, and 72931DP1. Always verify your unit's wiring diagram and existing contactor specs before ordering. Our team is available to confirm fitment — contact us before you buy.

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 PY4GNAA36090AA?
Yes. This is the factory-specified OEM contactor for the Carrier PY4GNAA36090AA. 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 PY4GNAA36090AA?
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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