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 LC748LCCSRLPX2100
Carrier

OEM Carrier Contactor 2-Pole 24V Coil for LC748LCCSRLPX2100

SKU: CARRIE-LC748LCCSRLPX2100-CONTACTOR-HN52TC040 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 LC748LCCSRLPX2100

This is the factory OEM replacement contactor (part# HN52TC040) for the Carrier LC748LCCSRLPX2100 condensing unit. The contactor is the high-voltage relay that bridges 240V power to the compressor and condenser fan motor each time the thermostat calls for cooling. When the contactor fails — due to pitted contacts, a burned coil, or a stuck plunger — the outdoor unit will either refuse to start entirely, run continuously without cycling off, or trip the breaker repeatedly. Replacing a worn contactor is one of the most cost-effective repairs in residential HVAC service.

  • Specs: 2-pole configuration | 24V AC coil voltage | 40-amp contact rating | 240V load voltage | Direct OEM replacement for part number HN52TC040
  • OEM vs Generic: OEM contactors use silver-alloy contact tips rated to factory arc-interrupt specifications. Generic substitutes frequently use lower-grade alloys that pit and weld shut faster — especially in high-cycle climates. This listing is the genuine Carrier factory part.
  • Install difficulty: 2/5 — Shut off power at the disconnect AND breaker panel before proceeding. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. Line-voltage terminals must be torqued to spec — loose connections accelerate contact erosion.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our climate-controlled parts warehouse.

Compatibility: Engineered as a direct drop-in replacement for Carrier model LC748LCCSRLPX2100. Always confirm coil voltage (24V) and pole count on your unit's wiring diagram or data plate before ordering. If you're unsure of fitment, our parts specialists verify compatibility at no charge before you buy — call or chat anytime. 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 LC748LCCSRLPX2100?
Yes. This is the factory-specified OEM contactor for the Carrier LC748LCCSRLPX2100. 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 LC748LCCSRLPX2100?
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