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OEM Carrier 2-Pole Contactor 30A 24V Coil for C50A405011 | National HVAC Parts
Carrier

OEM Carrier 2-Pole Contactor 30A 24V Coil for C50A405011 | National HVAC Parts

SKU: CARRIE-C50A405011-CONTACTOR-HN53CB115 Brand: Carrier

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 2-Pole Contactor 24V Coil for Model C50A405011

This OEM contactor is the factory-specified replacement for the Carrier C50A405011 commercial packaged unit. The contactor acts as a high-voltage relay, using a 24V signal from the thermostat or control board to close its contacts and deliver line voltage to the compressor and condenser fan motor. When a contactor fails — whether from pitted contacts, a burned coil, or contacts that weld shut — the result is a system that won't energize, short-cycles, or runs continuously without responding to the thermostat. OEM part numbers covered: HN53CB115, HN53CD115, HN53HF122.

  • Specs: 2-pole configuration | 24V coil voltage | 30A contact rating | Direct factory replacement for HN53CB115, HN53CD115, and HN53HF122
  • OEM vs Generic: OEM contactors use silver-alloy contacts rated to factory arc-interruption specs. Generic contactors frequently use lower-grade contact materials that pit and fail prematurely, especially under the high inrush current of commercial compressors.
  • Install difficulty: 3/5 — Shut off all power at the disconnect and breaker before proceeding. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring before disconnecting terminals. Verify coil voltage with a multimeter before condemning the contactor.
  • Warranty: 1-year OEM factory warranty. In-stock units ship same business day from our warehouse.

Compatibility: Designed for the Carrier C50A405011 commercial packaged unit. This listing covers OEM part numbers HN53CB115, HN53CD115, and HN53HF122 — verify your existing part number against these three before ordering to confirm an exact fit. Always cross-reference coil voltage and pole configuration on your unit's data plate. Have a fitment question? Our HVAC parts specialists verify compatibility before you order — reach out before placing your order.

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 $75
  • 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 C50A405011 | National HVAC Parts?
Yes. This is the factory-specified OEM contactor for the Carrier C50A405011 | National HVAC Parts. 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 C50A405011 | National HVAC Parts?
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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