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OEM Carrier Contactor 2-Pole 24V Coil for C50A504011
Carrier

OEM Carrier Contactor 2-Pole 24V Coil for C50A504011

SKU: CARRIE-C50A504011-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 C50A504011

This is the factory-specified OEM replacement contactor for the Carrier C50A504011 commercial packaged unit. The contactor is a high-voltage relay that closes the circuit to the compressor and condenser fan motor when the thermostat sends a 24V signal. When the contactor fails — due to pitted contacts, a burned coil, or a stuck armature — the system either won't turn on at all, runs continuously without shutting off, or makes a loud chattering or buzzing noise at the unit. Replacing a worn contactor is one of the most impactful preventive maintenance steps you can take to protect your compressor.

  • Specs: 2-pole configuration | 24V AC coil voltage | Rated for high-amperage compressor loads | OEM part numbers HN53CB115 and HN53CD115 — verify your existing contactor's coil voltage and pole count on the data plate before ordering
  • OEM vs Generic: OEM contactors use factory-matched contact materials and spring tension tolerances. Generic contactors frequently exhibit premature contact pitting and inconsistent pull-in voltage, which shortens compressor life and increases service callbacks.
  • Install difficulty: 2/5 — Disconnect power at the disconnect box and verify zero voltage with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removal. Transfer one wire at a time to avoid miswiring.
  • Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before 3 PM EST ship same business day from our climate-controlled warehouse.

Compatibility: Engineered for the Carrier C50A504011 commercial packaged unit. Cross-references OEM part numbers HN53CB115 and HN53CD115. Always confirm coil voltage and pole configuration on your unit's data plate prior to ordering. Our technical team is available to verify fitment — reach out before you buy if you have any questions.

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 C50A504011?
Yes. This is the factory-specified OEM contactor for the Carrier C50A504011. 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 C50A504011?
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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