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OEM Carrier Contactor 2-Pole 24V Coil for C50A203011
Carrier

OEM Carrier Contactor 2-Pole 24V Coil for C50A203011

SKU: CARRIE-C50A203011-CONTACTOR-HN53CB115 Brand: Carrier

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Texas CMBL #19328542014
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OEM Carrier 2-Pole Contactor for Model C50A203011 Packaged Unit

This is the factory-specified OEM replacement contactor for the Carrier C50A203011 packaged rooftop/commercial unit. The contactor is a high-voltage relay that closes the circuit between the 24V control board signal and the high-voltage power supply to the compressor and condenser fan motor. When the contactor fails, the most common symptom is an air conditioner that simply will not turn on — the thermostat calls for cooling, but nothing happens. You may also notice pitted or burned contact points on the old unit, or hear a clicking or chattering sound as the coil attempts to pull in without making solid contact.

  • Specs: 2-Pole configuration | 24V coil voltage | Rated for high-amperage compressor loads | OEM part numbers HN53CB115 and HN53CD115 — both are factory-authorized replacements for this model
  • OEM vs Generic: OEM Carrier contactors are manufactured to exact coil pull-in voltage tolerances and contact gap specifications. Generic contactors may use lower-grade silver alloy contacts that pit and arc prematurely, leading to repeat failures and potential compressor damage from voltage drop across degraded contacts.
  • Install difficulty: 2/5 — Always disconnect power at the disconnect box and verify zero voltage with a multimeter before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, wire labels or camera for documenting terminal connections. The contactor mounts in the control/electrical compartment and wires connect to screw terminals.
  • Warranty: 1-year OEM factory warranty on parts. Orders placed before cutoff ship same business day from our stocked warehouse.

Compatibility: Designed for the Carrier C50A203011 packaged unit. Verify coil voltage and pole configuration on your unit's wiring diagram or data plate before ordering. Both OEM part numbers HN53CB115 and HN53CD115 are listed as compatible replacements — if you have questions about which revision applies to your serial number range, our fitment team is available to confirm before you order. In-stock and ready to ship 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 $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 C50A203011?
Yes. This is the factory-specified OEM contactor for the Carrier C50A203011. 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 C50A203011?
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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