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 C50A402011
Carrier

OEM Carrier Contactor 2-Pole 24V Coil for C50A402011

SKU: CARRIE-C50A402011-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 C50A402011

This OEM contactor (part# HN53CB115) is the factory-specified replacement for the Carrier C50A402011 packaged unit. The contactor is a high-voltage relay controlled by the thermostat's 24V signal — when energized, it closes the circuit to send line voltage to the compressor and condenser fan motor. When a contactor fails, symptoms include the system not responding to a call for cooling, a buzzing or chattering sound at the contactor, or pitted/burned contact points that prevent proper electrical connection.

  • Specs: 2-pole configuration | 24V AC coil voltage | High-amperage contacts rated for compressor load | Direct OEM replacement — Part# HN53CB115
  • OEM vs Generic: This OEM contactor is manufactured to Carrier's exact specifications, ensuring proper coil pull-in voltage, contact gap, and current rating. Aftermarket contactors often use inferior contact materials that pit and weld faster under load, leading to repeat failures within a single season.
  • Install difficulty: 2/5 — Disconnect all power at the breaker and verify zero voltage with a multimeter before touching any terminals. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph existing wiring before removing any leads to ensure correct reconnection.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed by 3 PM local time ship same business day from our climate-controlled warehouse.

Compatibility: Designed specifically for the Carrier C50A402011 commercial packaged unit. Always verify the OEM part number HN53CB115 against your unit's data plate or wiring diagram before ordering. Our HVAC parts specialists are available to confirm fitment — reach out before you order if you have any questions. In stock and ready to ship today.

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 C50A402011?
Yes. This is the factory-specified OEM contactor for the Carrier C50A402011. 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 C50A402011?
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