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OEM Carrier Contactor 2-Pole 24V Coil for CP50P550P503521CP
Carrier

OEM Carrier Contactor 2-Pole 24V Coil for CP50P550P503521CP

SKU: CARRIE-CP50P550P503521CP-CONTACTOR-HN53CD115 Brand: Carrier

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 2-Pole Contactor 24V Coil for Model CP50P550P503521CP

This OEM replacement contactor is the factory-specified part for the Carrier CP50P550P503521CP packaged unit. The contactor is a high-voltage relay that receives a 24V signal from the thermostat and closes the circuit to send line voltage to the compressor and condenser fan motor. When it fails, the most common symptoms include the AC unit not turning on at all, the compressor failing to engage despite the thermostat calling for cooling, or the contactor staying stuck in the closed position causing the system to run continuously without cycling off.

  • Specs: 2-pole configuration | 24V AC coil voltage | Factory-rated amperage for Carrier packaged units | OEM part number HN53CD115 | Direct drop-in replacement
  • OEM vs Generic: This OEM contactor is manufactured to Carrier's exact electrical specifications, ensuring proper coil pull-in voltage, contact surface quality, and rated load life. Generic contactors often use lower-grade contact materials that pit and corrode faster, leading to premature failure and potential compressor damage.
  • Install difficulty: 3/5 — Disconnect all power at the disconnect box and breaker panel before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, voltage tester. Always photograph all wiring before removal. Verify power is off with a non-contact voltage tester before touching any terminals.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier CP50P550P503521CP packaged unit. Cross-reference OEM part number HN53CD115 against your unit's data plate and existing contactor label to confirm pole count, coil voltage, and amperage rating before ordering. Not sure if this is the right part? Our HVAC parts specialists verify fitment before you buy — contact us and we'll confirm compatibility 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 $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 CP50P550P503521CP?
Yes. This is the factory-specified OEM contactor for the Carrier CP50P550P503521CP. 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 CP50P550P503521CP?
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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Mike Rivera
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