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OEM Carrier 2-Pole Contactor 24V Coil 40A for C50A405051 — Ships Today
Carrier

OEM Carrier 2-Pole Contactor 24V Coil 40A for C50A405051 — Ships Today

SKU: CARRIE-C50A405051-CONTACTOR-HN53CB115 Brand: Carrier
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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier 2-Pole Contactor 24V Coil 40A for Model C50A405051

This OEM replacement contactor is the factory-specified high-voltage relay for the Carrier C50A405051 packaged unit. The contactor acts as the primary electrical switch that energizes the compressor and condenser fan motor when your thermostat calls for cooling. When the contactor fails — due to burned or pitted contacts, a stuck plunger, or a failed coil — your system will either refuse to start entirely, run continuously without shutting off, or trip a breaker. Replaces OEM part numbers HN53CB115, HN53HF122, and HN53HG120.

  • Specs: 2-pole configuration | 24V AC coil voltage | 40A load rating | Direct OEM drop-in replacement | Factory-matched contact material for long service life
  • OEM vs Generic: OEM contactors use silver-alloy contact tips rated to factory arc-interruption specs. Generic contactors often use inferior contact materials that pit and weld prematurely, leading to compressor damage and repeat failures within a single cooling season.
  • Install Difficulty: 3/5 — Always disconnect power at the breaker and verify zero voltage with a multimeter before servicing. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, non-contact voltage tester. Photograph all high-voltage wiring before removing any terminals. Coil wires are low-voltage (24V) and connect to the thermostat circuit.
  • Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before 3PM ship same business day from our climate-controlled HVAC parts warehouse.

Compatibility: Engineered specifically for the Carrier C50A405051 commercial packaged unit and directly cross-references OEM part numbers HN53CB115, HN53HF122, and HN53HG120. Always confirm pole count, coil voltage, and amperage rating against your unit's data plate before ordering. Not sure if this is the right part? Our HVAC parts specialists verify fitment before you buy — contact us today and get your system back online 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 $99
  • 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 C50A405051 — Ships Today?
Yes. This is the factory-specified OEM contactor for the Carrier C50A405051 — Ships Today. 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 C50A405051 — Ships Today?
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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