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 40A 24V for TCHC2550HECMRMH501
Carrier

OEM Carrier 2-Pole Contactor 40A 24V for TCHC2550HECMRMH501

SKU: CARRIE-TCHC2550HECMRMH501-CONTACTOR-HN53TZ024 Brand: Carrier
✓ Guaranteed to fit TCHC2550HECMRMH501 — 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 40 Amp 24V Coil for Model TCHC2550HECMRMH501

This OEM Carrier contactor (part numbers HN53TZ024 and HN52TC040) is the factory-specified high-voltage relay for the Carrier TCHC2550HECMRMH501 heat pump condensing unit. The contactor acts as the main power switch that closes when the thermostat calls for cooling or heating, sending 240V line voltage to the compressor and condenser fan motor. When the contactor fails — due to worn contacts, a burned coil, or contact welding — the system will either refuse to turn on entirely, run continuously without cycling off, or trip the breaker. Chattering or buzzing from the outdoor unit is another telltale sign of a failing contactor coil.

  • Specs: 2-pole | 40A FLA (Full Load Amps) | 24V 50/60Hz control coil | OEM part numbers: HN53TZ024 / HN52TC040 | Factory-matched contact material and coil resistance
  • OEM vs Generic: OEM contactors use factory-spec contact alloy and coil wire gauge, ensuring proper pull-in voltage and rated contact life. Generic contactors often use inferior contact material that arcs and pits faster, shortening compressor and fan motor life.
  • Install difficulty: 3/5 — ALWAYS shut off power at the disconnect and breaker panel before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, voltage tester. Photograph all wiring before disconnecting. Verify coil voltage with a multimeter before condemning the contactor.
  • Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered as a direct drop-in replacement for the Carrier TCHC2550HECMRMH501 heat pump condensing unit. Always verify the 2-pole configuration, 40A rating, and 24V coil voltage against your unit's data plate before ordering. Our parts specialists are available to confirm fitment — order with confidence and get your system back online 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 TCHC2550HECMRMH501?
Yes. This is the factory-specified OEM contactor for the Carrier TCHC2550HECMRMH501. 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 TCHC2550HECMRMH501?
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