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 30A 24V Coil Definite Purpose Contactor for C48A504051 — Ships Today
Carrier

OEM Carrier 2-Pole 30A 24V Coil Definite Purpose Contactor for C48A504051 — Ships Today

SKU: CARRIE-C48A504051-CONTACTOR-HN53CB115 Brand: Carrier
✓ Guaranteed to fit — 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 24V Coil 30A for Model C48A504051

This OEM replacement contactor is the factory-specified part for the Carrier C48A504051 packaged unit. The contactor is a high-voltage relay controlled by the 24V thermostat signal — when the thermostat calls for cooling, the contactor closes and delivers line voltage to the compressor and condenser fan motor. When the contactor fails, the most common symptoms are an AC unit that won't turn on at all, a compressor that hums but doesn't start, or pitted/burned contacts that cause erratic operation or hard starts. Replaces OEM part numbers HN53CB115, HN53HF122, and HN53HG120.

  • Specs: 2-pole configuration | 24V coil voltage | 30A rating | Factory-matched contact material and coil pull-in voltage for reliable switching
  • OEM vs Generic: OEM contactors use factory-grade contact alloys and coil windings designed to exact Carrier tolerances. Generic contactors often use lower-grade contact material that pits faster under high inrush current, leading to premature failure and compressor damage.
  • Install difficulty: 3/5 — Requires shutting off power at the disconnect and breaker before proceeding. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before disconnecting. Verify coil voltage and pole configuration match your existing contactor before installing.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for Carrier C48A504051 packaged units. Cross-references OEM part numbers HN53CB115, HN53HF122, and HN53HG120. Always verify pole count, amperage rating, and coil voltage against your unit's data plate and existing contactor before ordering. Our team is available to confirm fitment — just reach out before you buy.

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 C48A504051 — Ships Today?
Yes. This is the factory-specified OEM contactor for the Carrier C48A504051 — Ships Today. 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 C48A504051 — Ships Today?
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