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Carrier

OEM Carrier Contactor CSA0300L5Y for Model CSA0300L5Y

SKU: carrier-contactor-csa0300l5y Brand: Carrier
$34.95

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

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OEM Carrier Contactor CSA0300L5Y for Model CSA0300L5Y

The Carrier CSA0300L5Y contactor is a genuine OEM switching component that manages line voltage to the compressor and outdoor fan motor in Carrier HVAC systems. A low-voltage coil drives the contactor, closing its main contacts on a cooling call and opening them when the cycle completes, making it one of the most commonly serviced electrical parts in air conditioning repair. Engineered to Carrier's exact specifications, this part matches the coil voltage, amperage rating, and pole configuration required by model CSA0300L5Y, so you avoid the premature burnout and wiring mismatches that come with aftermarket substitutes. A bad contactor typically shows up as a buzzing unit that won't engage, erratic cooling, or burned and welded contacts. Replacement is an approachable repair: disconnect power, move the wiring one lead at a time while referencing a photo, install the new contactor, and reconnect. Plan for about 20 to 30 minutes with standard tools, and always confirm voltage before startup. This OEM contactor restores reliable, safe operation. We stock it and ship same-day on orders placed before 3PM CST.

Compatibility

This part is compatible with Carrier model CSA0300L5Y.

Shipping

Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.

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 support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Contactor fit my Carrier Model CSA0300L5Y?
Yes. This is the factory-specified OEM contactor for the Carrier Model CSA0300L5Y. 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 Model CSA0300L5Y?
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.
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