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OEM Carrier Contactor 1-Pole 24V 30A for PH3ZNB036000AA
Carrier

OEM Carrier Contactor 1-Pole 24V 30A for PH3ZNB036000AA

SKU: CARRIE-PH3ZNB036000AA-CONTACTOR-HN51KC024 Brand: Carrier
✓ Guaranteed to fit PH3ZNB036000AA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 1-Pole Contactor 24V 30A — HN51KC024 for Model PH3ZNB036000AA

This is the genuine OEM Carrier contactor (part# HN51KC024), the factory-specified high-voltage relay for the Carrier PH3ZNB036000AA heat pump system. The contactor is the critical switching component that receives a 24V signal from the thermostat and closes to deliver line voltage to the compressor and/or condenser fan motor. When the contactor fails — through burned contacts, a welded-shut coil, or a failed coil — you'll typically experience symptoms such as: the outdoor unit not energizing at all, the system humming without the compressor starting, or the unit running continuously without shutting off.

  • Specs: 1-Pole (single-pole) | 24 VAC coil voltage | 30 Amps FLA | 150 Amps LRA | 50/60 Hz | Factory OEM part number HN51KC024
  • OEM vs Generic: OEM Carrier contactors are manufactured to exact factory tolerances with silver-alloy contacts rated for the full 30A load. Generic aftermarket contactors frequently use lower-grade contact materials that pit and burn prematurely, leading to repeat failures within a single season.
  • 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. Always photograph existing wiring before disconnecting any leads. After installation, verify contactor pull-in by confirming 24V across coil terminals on a thermostat call.
  • Warranty: Backed by a 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Designed and factory-specified for the Carrier PH3ZNB036000AA heat pump system. Also cross-references to Carrier Bryant and Payne units listing HN51KC024 in their official parts list. Verify your unit's wiring diagram and data plate before ordering — our team is available to confirm fitment prior to purchase.

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 PH3ZNB036000AA?
Yes. This is the factory-specified OEM contactor for the Carrier PH3ZNB036000AA. 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 PH3ZNB036000AA?
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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