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 30A 24V Coil for C4850C50AW02521 | National HVAC Parts
Carrier

OEM Carrier Contactor 2-Pole 30A 24V Coil for C4850C50AW02521 | National HVAC Parts

SKU: CARRIE-C4850C50AW02521-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 HN53CB115 for Model C4850C50AW02521

This is the factory-specified OEM replacement contactor (part number HN53CB115) for the Carrier C4850C50AW02521 packaged unit. The contactor is a high-voltage relay that opens and closes the circuit powering your compressor and condenser fan motor. When the thermostat calls for cooling, the 24V control circuit energizes the contactor coil, pulling in the contacts to deliver line voltage to the load side. When a contactor fails — due to pitted or welded contacts, a burned coil, or worn contact springs — the system will either refuse to start, run continuously without shutting off, or draw excessive amperage that trips breakers and shortens compressor life.

  • Specs: 2-pole configuration | 24V AC coil voltage | Factory-matched contact rating | Designed for R-410A packaged system load requirements
  • OEM vs Generic: OEM contactors use silver-alloy contact tips rated for the exact inrush current of your Carrier compressor. Generic contactors often use lower-grade contacts that pit faster, especially in high-cycling climates, leading to premature failure and compressor damage.
  • Install Difficulty: 2/5 — Shut off power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. One screw secures the contactor to the panel; line and load wires connect to labeled terminals.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship the same business day from our dedicated HVAC parts warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier C4850C50AW02521 packaged unit. Always verify coil voltage and pole configuration on your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork, no returns.

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 C4850C50AW02521 | National HVAC Parts?
Yes. This is the factory-specified OEM contactor for the Carrier C4850C50AW02521 | 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 C4850C50AW02521 | 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