OEM Carrier 3-Pole Contactor 24V 40A for Model YAC48110YAC203AT

This OEM Carrier contactor (part# HN53CD024 / cross-ref HN52KC053) is the factory-specified high-voltage relay for the Carrier YAC48110YAC203AT packaged unit. The contactor is the critical switching component that receives the 24V signal from the control board and closes the high-voltage circuit to energize the compressor and condenser fan motor. When a contactor fails, the most common symptoms are an AC system that won't turn on at all, a compressor that won't engage despite the thermostat calling for cooling, or visible pitting and burning on the contact points inside the relay.

• Specs: 3-pole configuration | 24V AC/DC coil voltage | 40A continuous current rating | Max 600V load side | Screw-mount terminal design | Factory-matched replacement
• OEM vs Generic: This is a genuine Carrier OEM contactor built to exact factory specifications. Generic aftermarket contactors often use lower-grade contact materials that arc and pit faster under load, leading to premature failure and potential compressor damage.
• Install difficulty: 3/5 — Requires shutting off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. Discharge any capacitors in the unit before reaching near terminals. If unsure, consult a licensed HVAC technician.
• Warranty: 1-year OEM manufacturer warranty. Orders placed before cut-off ship same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model YAC48110YAC203AT. Also cross-references part number HN52KC053. Always verify coil voltage (24V), pole count (3-pole), and amperage (40A) against your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you purchase — no guesswork required.