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OEM Carrier 40A Contactor 2-Pole 24V Coil for C50A502712
Carrier

OEM Carrier 40A Contactor 2-Pole 24V Coil for C50A502712

SKU: CARRIE-C50A502712-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 C50A502712

This OEM replacement contactor is the factory-specified part for the Carrier C50A502712 packaged unit. The contactor is a high-voltage relay that receives a 24V signal from the thermostat and closes the circuit to power the compressor and condenser fan motor. When it fails — due to pitted contacts, a burned coil, or a stuck plunger — the unit will either refuse to start, run continuously without shutting off, or trip the breaker. OEM part numbers HN53CB115 and HN53CD115 are the factory-matched replacements for this application.

  • Specs: 2-Pole configuration | 24V control coil | 30–40A contact rating | Factory-matched contact material and coil resistance for reliable switching under load
  • OEM vs Generic: OEM contactors (HN53CB115 / HN53CD115) use factory-grade silver-alloy contacts rated for thousands of switching cycles. Generic substitutes often use lower-grade contact material that pits prematurely, especially in high-cycling applications — leading to repeat failures within a single season.
  • Install difficulty: 3/5 — Always disconnect power at the disconnect box and verify voltage is absent with a multimeter before proceeding. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all high-voltage wiring before removal. Coil wires (24V) are typically push-on terminals; line and load lugs are screw-type.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier C50A502712 commercial packaged unit. Cross-references OEM part numbers HN53CB115 and HN53CD115. Confirm pole count, amperage rating, and coil voltage on your unit's data plate before ordering. Our team is available to verify fitment — reach out before you buy if you have any questions. Order today and receive same-day shipping on all in-stock parts.

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 C50A502712?
Yes. This is the factory-specified OEM contactor for the Carrier C50A502712. 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 C50A502712?
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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