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OEM Carrier Contactor 2-Pole 24V Coil for C50A303512
Carrier

OEM Carrier Contactor 2-Pole 24V Coil for C50A303512

SKU: CARRIE-C50A303512-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 C50A303512

This OEM replacement contactor is the factory-specified switching relay for the Carrier C50A303512 packaged unit. The contactor serves as the high-voltage relay that closes the circuit to the compressor and condenser fan motor when the thermostat calls for cooling. When it fails — due to pitted contacts, a burned coil, or contacts welded shut — the most common symptoms are an AC unit that won't turn on at all, one that runs continuously regardless of thermostat commands, or a unit that hums without fully starting. Replaces OEM part numbers HN53CB115 and HN53CD115.

  • Specs: 2-Pole configuration | 24V AC coil voltage | Factory-rated amperage for Carrier C50A303512 | Direct OEM replacement — no modifications required
  • OEM vs Generic: OEM contactors feature silver-alloy contact tips rated to factory tolerances, ensuring reliable switching across thousands of cycles. Generic aftermarket units often use lower-grade contact materials that pit and fail prematurely, especially under high-load summer conditions.
  • Install difficulty: 2/5 — Disconnect all power at the breaker and verify zero voltage with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removing the old contactor to simplify reinstallation.
  • Warranty: 1-year OEM factory warranty. In-stock units ship the same business day from our warehouse — get your system back online fast.

Compatibility: Engineered specifically for the Carrier C50A303512 commercial packaged unit. Cross-references OEM part numbers HN53CB115 and HN53CD115. Always confirm coil voltage and pole configuration on your unit's data plate before ordering. Our fitment specialists are available to verify compatibility before you buy — don't guess on a critical switching component.

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 C50A303512?
Yes. This is the factory-specified OEM contactor for the Carrier C50A303512. 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 C50A303512?
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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