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 C50A404051
Carrier

OEM Carrier 2-Pole Contactor 24V Coil for C50A404051

SKU: CARRIE-C50A404051-CONTACTOR-HN53CB115 Brand: Carrier
✓ Guaranteed to fit C50A404051 — 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 C50A404051

This OEM replacement contactor is the factory-specified part for the Carrier C50A404051 packaged unit. The contactor is the high-voltage relay that connects and disconnects line voltage to the compressor and condenser fan motor whenever your thermostat calls for cooling. When the contactor fails — due to pitted contacts, a burned coil, or stuck contacts — your system may refuse to start, run continuously without cycling off, or trip a breaker. OEM part numbers covered: HN53CB115, HN53HF122, and HN53HG120.

  • Specs: 2-pole configuration | 24V control coil | High-amperage contact rating | Direct OEM drop-in replacement with factory-matched contact material and coil resistance
  • OEM vs Generic: OEM contactors use silver-alloy contact tips rated for thousands of switching cycles. Generic units often use lower-grade contacts that pit and weld far sooner, leading to repeat failures and potential compressor damage.
  • Install difficulty: 2/5 — Shut off power at both the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wire positions before removing the old contactor, then transfer wires one at a time to the new unit.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship the same business day from our stocked warehouse.

Compatibility: Designed for the Carrier C50A404051 commercial packaged rooftop unit. Cross-references OEM part numbers HN53CB115, HN53HF122, and HN53HG120. Verify pole count, coil voltage, and amperage rating on your unit's data plate prior to ordering. Our fitment team is available to confirm compatibility before you buy — contact us anytime.

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 C50A404051?
Yes. This is the factory-specified OEM contactor for the Carrier C50A404051. 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 C50A404051?
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