OEM Carrier 2-Pole Contactor 35A 208/240V for Model YAC48140YAC303T

This OEM contactor (part number HN52KC053) is the factory-specified replacement for the Carrier YAC48140YAC303T packaged unit. The contactor is a high-voltage relay that closes when the thermostat calls for cooling, sending line voltage to the compressor and condenser fan motor. When it fails — through pitted contacts, a burned coil, or a stuck-open position — the system will appear completely unresponsive: the compressor and outdoor fan won't start even though the thermostat is calling. You may also notice chattering, humming from the contactor box, or intermittent cooling failure on hot days when electrical demand is highest.

• Specs: 35 Amps | 2-Pole | 208/240V coil | Factory OEM part number HN52KC053 | Replaces original Essex/Carrier contactor assembly
• OEM vs Generic: OEM contactors are manufactured to exact Carrier electrical tolerances, with contact surface materials and spring tensions matched to the compressor load profile of the YAC48140YAC303T. Generic contactors often use lower-grade contact alloys that pit faster under repeated switching cycles, shortening service life significantly.
• Install difficulty: 3/5 — Always disconnect and lock out power at the disconnect box before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify coil continuity and confirm 24V signal), and a camera or phone to photograph wiring before removal. Capacitor discharge is not required for this repair, but verify all line-voltage terminals are de-energized before touching.
• Warranty: 1-year OEM factory warranty. In-stock orders ship same business day from our warehouse.

Compatibility: Designed for the Carrier YAC48140YAC303T packaged unit. Always verify your unit's data plate voltage, amperage, and pole count before ordering to ensure a correct match. Our fitment team is available to confirm compatibility before you purchase — no guesswork required. Order today and get same-day shipping on all in-stock parts.