OEM Carrier 2-Pole Contactor 35A 208/240V for Model YAC48140YAC203T

This OEM Carrier contactor (part# HN52KC053) is the factory-specified high-voltage switching relay for the Carrier YAC48140YAC203T packaged unit. The contactor acts as the main power switch that allows low-voltage thermostat signals (24V) to energize the high-voltage compressor and condenser fan circuits. When the contactor fails, the most common symptoms are an air conditioner that refuses to start despite the thermostat calling for cooling, audible chattering or buzzing from the contactor coil, welded or burned contacts causing the unit to run continuously, or a tripped breaker. Replacing a worn or pitted contactor is one of the most impactful preventive maintenance steps you can take to protect your compressor investment.

• Specs: 2-Pole | 35 Amps | 208/240V rated load voltage | 24V control coil | Factory-matched OEM tolerances for Carrier YAC48140YAC203T
• OEM vs Generic: OEM contactors use factory-spec contact materials and coil windings that resist pitting and arcing under full load. Generic contactors often use lower-grade contact alloys that corrode faster, especially in humid or coastal environments, leading to premature failure.
• Install difficulty: 2/5 — Always disconnect power at the breaker and verify zero voltage with a multimeter before touching any terminals. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removing the old contactor.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model YAC48140YAC203T. Verify your existing contactor's pole count, amperage rating, and coil voltage from the unit data plate or the old part before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you buy if you have any questions.