OEM Carrier 3-Pole Contactor 24V 40A — HN53CD024 for Model YAC48110YACX104AC

This is the genuine OEM Carrier contactor (part number HN53CD024), the factory-specified high-voltage relay for the Carrier YAC48110YACX104AC packaged unit. The contactor acts as the primary power switching device in your system's electrical circuit — when the thermostat calls for cooling or heating, the 24V control board energizes the contactor coil, closing the high-voltage contacts that deliver power to the compressor and condenser fan motor. A failed contactor is one of the most common reasons an HVAC system appears completely unresponsive: you may hear a click with no startup, notice the compressor humming but not running, or find the system fails to energize at all even with a good thermostat signal.

• Specs: 3-Pole configuration | 24V AC coil voltage | 40A continuous current rating | Max 600V load side | Screw-mount terminal design | Factory-matched OEM tolerances
• OEM vs Generic: This is a genuine Carrier OEM contactor built to exact factory specifications. Generic contactors often use lower-grade contact materials that arc and pit faster under load, leading to premature failure — especially in high-cycle commercial and residential packaged units like the YAC48110YACX104AC.
• Install difficulty: 3/5 — Always shut off power at the disconnect before servicing. Tools needed: multimeter (to verify de-energized circuits), flathead and Phillips screwdrivers, needle-nose pliers, and wire labels or a phone camera to document wiring before disconnecting. Transfer wires one at a time to avoid miswiring.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day from our warehouse when ordered before cutoff.

Compatibility: Designed as a direct OEM replacement for the Carrier YAC48110YACX104AC packaged unit. Verify your existing contactor's pole count, coil voltage (24V), and amperage rating on the data plate or existing component label before ordering. Our fitment team is available to confirm compatibility prior to purchase — don't guess on a part this critical to your system's operation.