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OEM Carrier Contactor 1-Pole 30A 24V for PH3ZNB036000AB
Carrier

OEM Carrier Contactor 1-Pole 30A 24V for PH3ZNB036000AB

SKU: CARRIE-PH3ZNB036000AB-CONTACTOR-HN51KC024 Brand: Carrier
✓ Guaranteed to fit PH3ZNB036000AB — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Single-Pole Contactor 30 Amp 24V Coil — HN51KC024 for Model PH3ZNB036000AB

This is the genuine OEM factory-authorized replacement contactor for the Carrier PH3ZNB036000AB heat pump / split-system unit. The contactor is the high-voltage relay responsible for energizing the compressor and condenser fan motor every time the thermostat calls for cooling or heating. When the 24V control circuit closes the coil, the contactor pulls in and connects line voltage to the load. A failed contactor is one of the most common reasons an outdoor unit will not start — symptoms include the unit humming with no compressor operation, the system not responding to a thermostat call, or contacts that are visibly pitted, burned, or welded shut.

  • Specs: 1-Pole configuration | 30A Full Load Amps (FLA) | 150A Locked Rotor Amps (LRA) | 24 VAC coil voltage | 50/60 Hz | OEM Part # HN51KC024
  • OEM vs Generic: Factory Authorized Parts are engineered to meet exact Carrier Corporation specifications for optimum system performance and proven reliability. Generic contactors may use lower-grade contact alloys, increasing the risk of premature pitting and welding under high-cycle loads.
  • Install Difficulty: 2/5 — Shut off all power at the disconnect and breaker before opening the control compartment. Photograph all wiring before disconnecting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Follow the unit wiring diagram for line, load, and 24V coil connections; verify contactor pull-in with a 24V thermostat call after installation.
  • Warranty & Shipping: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Fits Carrier model PH3ZNB036000AB. Also widely used across Carrier, Bryant, Payne, and other ICP family residential and light-commercial air conditioning and heat pump units up to 5 tons (60,000 BTU). Always verify the part number against your unit's data plate and parts list before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — contact us today and get your system back online fast.

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 PH3ZNB036000AB?
Yes. This is the factory-specified OEM contactor for the Carrier PH3ZNB036000AB. 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 PH3ZNB036000AB?
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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