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 C50A503022
Carrier

OEM Carrier Contactor 2-Pole 24V Coil for C50A503022

SKU: CARRIE-C50A503022-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 for Model C50A503022 Packaged Unit

This is the factory-specified OEM replacement contactor for the Carrier C50A503022 packaged rooftop unit. The contactor is a high-voltage relay that closes the circuit between your 24V control board signal and the high-voltage power supply to the compressor and condenser fan motor. When the contactor fails — due to pitted contacts, a stuck or burned coil, or a welded plunger — the most common symptoms are an AC system that won't turn on at all, a compressor that hums but never starts, or a unit that runs continuously even after the thermostat is satisfied. Replaces OEM part numbers HN53CB115 and HN53CD115.

  • Specs: 2-pole configuration | 24V coil voltage | Factory-rated amperage for Carrier C50A503022 | Silver alloy contact tips for extended service life and reduced arcing
  • OEM vs Generic: OEM contactors are manufactured to exact Carrier electrical and mechanical tolerances. Generic contactors may carry higher contact resistance and looser coil pull-in voltage specs, leading to premature failure and potential compressor damage — especially in high-cycle commercial applications.
  • Install difficulty: 3/5 — Always disconnect and lock out power at the disconnect box before beginning work. Tools needed: flathead and Phillips screwdrivers, 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter. Photograph all wire connections before removal. Verify coil voltage with your multimeter during commissioning.
  • Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before 3PM EST ship same business day from our climate-controlled parts warehouse.

Compatibility: Engineered specifically for the Carrier C50A503022 commercial packaged unit. This part directly replaces OEM part numbers HN53CB115 and HN53CD115. Always verify pole count, coil voltage, and amperage rating against your unit's wiring diagram and data plate before ordering. Not sure if this is the right part? Our HVAC-certified parts team will verify fitment before you buy — contact us before placing your order.

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 C50A503022?
Yes. This is the factory-specified OEM contactor for the Carrier C50A503022. 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 C50A503022?
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