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OEM Carrier 3-Pole Contactor 208/240V 40A for ROA0500H2Y
Carrier

OEM Carrier 3-Pole Contactor 208/240V 40A for ROA0500H2Y

SKU: CARRIE-ROA0500H2Y-CONTACTOR-HN53CD209 Brand: Carrier
✓ Guaranteed to fit ROA0500H2Y — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 3-Pole Contactor 208/240V 40A for Model ROA0500H2Y

This OEM contactor (part number HN53CD209) is the factory-specified high-voltage relay for the Carrier ROA0500H2Y rooftop unit. The contactor acts as the master electrical switch in the condensing section: when the thermostat sends a 208/240V coil signal, the contactor closes its three poles to deliver line voltage to the compressor and condenser fan motor simultaneously. A failed contactor is one of the most common causes of a commercial rooftop unit that powers up but will not cool — you may hear a hum or buzzing from the contactor coil with no motor response, or the system may fail to energize at all.

  • Specs: 3-pole configuration | 208/240V coil voltage | 40A Full Load Amps (FLA) | 50A Resistive rating | 50/60 Hz | Factory-matched OEM tolerances
  • OEM vs Generic: This genuine Carrier OEM contactor ensures exact coil pull-in voltage, contact gap geometry, and arc suppression rated for the ROA0500H2Y's electrical load. Generic contactors may use inferior contact materials prone to pitting and early failure under commercial duty cycles.
  • Install difficulty: 3/5 — Requires full lockout/tagout of the unit's main disconnect before opening the control panel. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring before removal. Verify 208/240V coil energization after install with a multimeter at coil terminals.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered for Carrier model ROA0500H2Y commercial rooftop equipment. Verify coil voltage (208/240V) and pole count (3-pole) against your unit's wiring diagram and data plate before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — contact us today and get back up and running fast.

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 ROA0500H2Y?
Yes. This is the factory-specified OEM contactor for the Carrier ROA0500H2Y. 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 ROA0500H2Y?
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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