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OEM Carrier Contactor 1-Pole 30A 24V for PH4ANG042000BBAA
Carrier

OEM Carrier Contactor 1-Pole 30A 24V for PH4ANG042000BBAA

SKU: CARRIE-PH4ANG042000BBAA-CONTACTOR-HN51KC024 Brand: Carrier
✓ Guaranteed to fit PH4ANG042000BBAA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 1-Pole Contactor 30A 24V Coil (HN51KC024) for Model PH4ANG042000BBAA

This OEM Carrier contactor (part# HN51KC024) is the factory-specified replacement for the Carrier PH4ANG042000BBAA heat pump condenser unit. The contactor is the high-voltage relay that opens and closes the compressor and condenser fan circuit every time your thermostat calls for cooling or heating. When contacts become pitted, burned, or welded shut — or when the 24V coil fails to pull in — the unit will either refuse to start or run continuously with no thermostat control. This is one of the most common service calls in residential HVAC.

  • Specs: 1-Pole | 30A FLA / 150A LRA | 24 VAC Coil | 50/60 Hz | OEM Part# HN51KC024
  • OEM vs Generic: This is a genuine Carrier Factory Authorized Part, engineered to exact factory specifications for the PH4ANG042000BBAA. Generic contactors may vary in contact gap, coil pull-in voltage, and contact silver content — accelerating wear under high-cycle residential loads.
  • Install difficulty: 2/5 — Shut off all power at the breaker and the disconnect box before proceeding. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. Discharge any capacitors in the compartment before touching adjacent terminals.
  • Warranty & Shipping: 1-year OEM factory warranty. In stock — ships same business day from our warehouse.

Compatibility: Verified fit for Carrier model PH4ANG042000BBAA. Also used across a wide range of Carrier, Bryant, and Payne residential heat pump and air conditioning condensers calling for a 1-pole, 24VAC coil, 30A contactor. Always confirm your unit's wiring diagram before ordering. Have a fitment question? Our HVAC parts specialists verify compatibility before you buy — contact us today.

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 PH4ANG042000BBAA?
Yes. This is the factory-specified OEM contactor for the Carrier PH4ANG042000BBAA. 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 PH4ANG042000BBAA?
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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