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OEM Carrier Contactor 2-Pole 24V Coil for C50A505021
Carrier

OEM Carrier Contactor 2-Pole 24V Coil for C50A505021

SKU: CARRIE-C50A505021-CONTACTOR-HN53CD115 Brand: Carrier

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 2-Pole Contactor 24V Coil for Model C50A505021

This OEM contactor is the factory-specified high-voltage relay for the Carrier C50A505021 packaged unit. The contactor acts as the primary switching device between your 24V control circuit and the high-voltage compressor and condenser fan circuits. When the thermostat calls for cooling, the 24V coil energizes and closes the contacts, allowing line voltage to power the compressor. A failed contactor is one of the most common causes of an air conditioning system that simply won't turn on — or one that hums loudly but never starts. Pitted, burned, or stuck contacts are telltale signs it's time to replace. OEM part numbers HN53CD115 and HN53HF122 are both factory-authorized replacements for this application.

  • Specs: 2-pole configuration | 24V coil voltage | Factory-rated amperage for C50A505021 | Heavy-duty silver-alloy contact tips for long service life
  • OEM vs Generic: OEM contactors use factory-spec contact materials and coil windings, ensuring proper pull-in voltage and contact life. Generic alternatives often use lower-grade contact alloys that pit and weld prematurely, leading to repeat failures.
  • Install Difficulty: 2/5 — Always shut off power at the disconnect and verify voltage is zero with a multimeter before touching any terminals. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. Swap wire-for-wire to avoid miswiring.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Designed for the Carrier C50A505021 commercial packaged unit. Cross-references OEM part numbers HN53CD115 and HN53HF122. Always verify pole count, amperage rating, and coil voltage against your unit's data plate and wiring diagram before ordering. Our fitment team is available to confirm compatibility before you buy — same-day shipping means you're back up and running 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 $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 C50A505021?
Yes. This is the factory-specified OEM contactor for the Carrier C50A505021. 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 C50A505021?
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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