OEM Carrier 2-Pole Contactor 35A 208/240V for Model YAC42110YAC302AK

This OEM replacement contactor (part number HN52KC053) is the factory-specified high-voltage switching relay for Carrier model YAC42110YAC302AK air conditioning systems. The contactor acts as the primary high-voltage relay in your outdoor condenser unit — when the thermostat calls for cooling, the 24V control circuit energizes the contactor coil, closing the contacts and sending 208/240V power to both the compressor and condenser fan motor. A failed contactor is one of the most common causes of a system that simply won't turn on: the indoor air handler runs, the thermostat calls for cooling, but the outdoor unit stays completely silent. Pitted or burned contacts, a chattering noise, or contacts that weld shut and won't release are all telltale signs of contactor failure.

• Specs: 2-Pole | 35 Amp | 208/240V load voltage | 24V coil voltage | Heavy-duty contacts rated for repeated switching cycles
• OEM vs Generic: This is a genuine Carrier OEM contactor manufactured to exact factory tolerances. Generic aftermarket contactors frequently use lower-grade contact materials that pit faster under load, leading to premature failure and potential compressor damage from voltage drop.
• Install Difficulty: 2/5 — Always disconnect power at the breaker and capacitor before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, electrical tape. Photograph all wiring connections before removal. The contactor is typically secured by two screws inside the access panel of the condenser unit.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered as a direct OEM drop-in replacement for Carrier YAC42110YAC302AK condensing units. Verify your existing contactor's amperage, pole count, and coil voltage against your unit's data plate before ordering. Our fitment team is available to confirm compatibility prior to purchase — same-day shipping on all in-stock orders.