Same-day shipping before 3PM CST · 35,000+ OEM Parts · Texas CMBL & SAM.gov Registered · Government POs Accepted

Menu

Home Shop All Account Cart
OEM Carrier 2-Pole Contactor 24V Coil for C4850C50Z2040500 | National HVAC Parts
Carrier

OEM Carrier 2-Pole Contactor 24V Coil for C4850C50Z2040500 | National HVAC Parts

SKU: CARRIE-C4850C50Z2040500-CONTACTOR-HN53CB115 Brand: Carrier
✓ Guaranteed to fit — or your money back. Terms

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 2-Pole Contactor 24V Coil for Model C4850C50Z2040500

This OEM replacement contactor is the factory-specified high-voltage relay for the Carrier C4850C50Z2040500 packaged unit. The contactor acts as the primary switching relay between your thermostat's 24V control signal and the high-voltage power supply 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 will either refuse to turn on entirely or will run continuously without responding to thermostat commands. OEM part numbers covered by this listing: HN53CB115, HN53HF122, and HN53HG120.

  • Specs: 2-pole configuration | 24V AC coil voltage | Factory-rated amperage for compressor and fan loads | Direct OEM replacement — no modification required
  • OEM vs Generic: This is an OEM Carrier contactor built to exact factory contact ratings and coil pull-in voltage. Aftermarket contactors frequently use lower-grade silver-alloy contacts that pit and weld faster under inductive compressor loads, shortening service life significantly.
  • Install difficulty: 2/5 — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring before removal. Verify coil voltage and pole count match your unit's data plate.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed by cutoff time ship same business day from our stocked warehouse.

Compatibility: Designed for the Carrier C4850C50Z2040500 packaged unit. Cross-references OEM part numbers HN53CB115, HN53HF122, and HN53HG120. Always confirm pole count, coil voltage, and amperage rating on your unit's data plate before ordering. Our HVAC parts specialists are available to verify fitment — order with confidence.

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 C4850C50Z2040500 | National HVAC Parts?
Yes. This is the factory-specified OEM contactor for the Carrier C4850C50Z2040500 | National HVAC Parts. 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 C4850C50Z2040500 | National HVAC Parts?
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.
Home Shop Search Account Cart
Fitment Guaranteed
MR
Mike Rivera
HVAC Parts Specialist — Online