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OEM Carrier 40A Contactor 2-Pole 24V Coil for C48A504012
Carrier

OEM Carrier 40A Contactor 2-Pole 24V Coil for C48A504012

SKU: CARRIE-C48A504012-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 C48A504012

This OEM replacement contactor is the factory-specified high-voltage relay for the Carrier C48A504012 packaged unit. The contactor acts as the primary electrical switch that receives a 24V signal from the thermostat and closes the high-voltage circuit to energize the compressor and condenser fan motor. When the contactor fails — due to burned or pitted contacts, a stuck plunger, or a failed coil — the system will either refuse to start entirely, run continuously without shutting off, or trip the circuit breaker repeatedly. Replaces OEM part numbers HN53CB115 and HN53CD115.

  • Specs: 2-pole configuration | 24V control coil | 40A contact rating | Direct OEM replacement | Factory-matched contact material for long service life
  • OEM vs Generic: OEM contactors use factory-grade contact alloys and coil windings calibrated to exact pull-in and drop-out voltages. Generic units frequently use inferior contact materials that pit and weld prematurely, leading to repeat failures within one season.
  • Install difficulty: 3/5 — Always shut off power at both the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. Verify coil voltage and pole count match your existing unit before installation.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our climate-controlled warehouse.

Compatibility: Designed for the Carrier C48A504012 packaged unit. Cross-references OEM part numbers HN53CB115 and HN53CD115. Always confirm pole count, coil voltage, and amperage rating against your unit's data plate before ordering. Our HVAC parts specialists are available to verify fitment — contact us before you order 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 C48A504012?
Yes. This is the factory-specified OEM contactor for the Carrier C48A504012. 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 C48A504012?
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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