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 Contactor 2-Pole 24V Coil for C4850C50Z9105110 | National HVAC Parts
Carrier

OEM Carrier Contactor 2-Pole 24V Coil for C4850C50Z9105110 | National HVAC Parts

SKU: CARRIE-C4850C50Z9105110-CONTACTOR-HN53CB115 Brand: Carrier

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 C4850C50Z9105110

This OEM replacement contactor is the factory-specified high-voltage relay for the Carrier C4850C50Z9105110 packaged unit. The contactor acts as the primary switching device that closes when the thermostat calls for cooling, sending line voltage to the compressor and condenser fan motor. When the contactor fails — due to pitted contacts, coil burnout, or a stuck/welded position — the most common symptoms are an air conditioner that refuses to start, runs continuously without shutting off, or trips the breaker on startup. Replacing the contactor is one of the most common and cost-effective HVAC repairs available.

  • Specs: 2-Pole configuration | 24V AC coil voltage | Heavy-duty contacts rated for compressor load | Direct OEM replacement for part numbers HN53CB115, HN53HF122, and HN53HG120
  • OEM vs Generic: This OEM contactor is built to Carrier's exact coil pull-in voltage and contact gap tolerances. Generic contactors frequently use thinner contact material that pits faster under inrush current, leading to premature failure and potential compressor damage.
  • Install difficulty: 2/5 — Always shut off power at both the disconnect box and the breaker panel before beginning. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, and a multimeter to confirm coil resistance. Photograph all wiring before disconnecting terminals to ensure accurate reinstallation.
  • Warranty: Backed by a 1-year OEM factory warranty. Orders placed before cutoff ship the same business day from our stocked warehouse.

Compatibility: Designed for the Carrier C4850C50Z9105110 packaged unit. This part cross-references OEM part numbers HN53CB115, HN53HF122, and HN53HG120 — confirm your existing contactor's pole count and coil voltage against your unit's data plate prior to ordering. Our parts specialists are available to verify fitment before you buy.

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 C4850C50Z9105110 | National HVAC Parts?
Yes. This is the factory-specified OEM contactor for the Carrier C4850C50Z9105110 | 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 C4850C50Z9105110 | 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