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OEM Carrier 2-Pole 24V Coil Definite Purpose Contactor for C4850C50Z2040900 — Ships Today
Carrier

OEM Carrier 2-Pole 24V Coil Definite Purpose Contactor for C4850C50Z2040900 — Ships Today

SKU: CARRIE-C4850C50Z2040900-CONTACTOR-HN53CB115 Brand: Carrier
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Texas CMBL #19328542014
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OEM Carrier 2-Pole Contactor for Model C4850C50Z2040900

This is the factory-specified OEM replacement contactor for the Carrier C4850C50Z2040900 packaged unit. The contactor is a high-voltage relay controlled by a 24V signal from the thermostat or control board. When the thermostat calls for cooling, the 24V coil energizes and closes the contacts, sending line voltage to the compressor and condenser fan motor. When the contactor fails — due to burned or pitted contacts, a welded contactor, or a failed coil — the system either won't start at all or runs continuously without responding to the thermostat. Replaces OEM part numbers HN53CB115 and HN53HF122.

  • Specs: 2-Pole configuration | 24V coil voltage | Rated for line voltage compressor and fan motor loads | Direct OEM replacement — factory-matched contact material and coil pull-in voltage
  • OEM vs Generic: OEM contactors use higher-grade silver-alloy contact tips that resist pitting and arcing far longer than generic alternatives. Inferior contacts can weld shut, causing the unit to run non-stop, or fail to close reliably, leaving you with no cooling during peak season.
  • Install difficulty: 3/5 — Always shut off power at the disconnect and verify zero voltage with a multimeter before proceeding. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removing the old contactor to ensure correct re-termination.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship the same business day from our climate-controlled warehouse.

Compatibility: Designed for the Carrier C4850C50Z2040900 packaged unit. Cross-references OEM part numbers HN53CB115 and HN53HF122. Verify pole count, coil voltage, and amperage rating on your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — reach out 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 $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 C4850C50Z2040900 — Ships Today?
Yes. This is the factory-specified OEM contactor for the Carrier C4850C50Z2040900 — 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 C4850C50Z2040900 — 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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