OEM Carrier 3-Pole Contactor 24V 40A — HN53CD024 for Model YAC3680YAC107C

This OEM Carrier contactor (part number HN53CD024) is the factory-specified high-voltage relay for the Carrier YAC3680YAC107C packaged unit. The contactor acts as the primary switching device between your 24V thermostat control circuit and the high-voltage compressor and fan motor loads. When the thermostat calls for cooling, the 24V coil energizes and closes the contacts, sending line voltage to the compressor. A failed contactor is one of the most common reasons an air conditioner will not start — symptoms include a system that hums briefly then shuts off, a compressor that runs constantly without cycling, or a unit that shows no response at all when cooling is demanded.

• Specs: 3-pole configuration | 24V AC coil voltage | 40A full-load amperage (FLA) | Max 600V | Screw-mount terminal connections | Factory-matched OEM replacement
• OEM vs Generic: OEM contactors use factory-spec contact material and coil windings, ensuring proper pull-in voltage and contact life. Generic contactors can suffer from coil chatter, premature pitting, and welded contacts — all of which can damage your compressor.
• Install difficulty: 3/5 — Requires disconnecting high-voltage power at the disconnect box before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, voltage tester. Always photograph all wiring before removal. Line voltage terminals must be treated with extreme caution even after disconnect.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day from our warehouse — order by 3 PM local time for same-day dispatch.

Compatibility: Engineered as a direct OEM replacement for Carrier model YAC3680YAC107C. Verify your existing contactor's pole count, coil voltage, and amperage rating on the data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — contact us today and get your system back online fast.