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This is the factory OEM replacement contactor (part number HN51JD026) for the Carrier CA16NA06000GBAAA split-system air conditioner. The contactor is a high-voltage relay controlled by the 24V thermostat signal — when the thermostat calls for cooling, the contactor closes and sends 240V power to the compressor and condenser fan motor. A failed contactor is one of the most common reasons an air conditioner won't respond to a thermostat call, produces a loud chattering or buzzing sound at the condenser, or leaves the compressor running non-stop. Replacing with an OEM-matched contactor ensures correct coil pull-in voltage, proper amp rating, and long service life.
Compatibility: Designed specifically for the Carrier CA16NA06000GBAAA 5-ton single-stage split-system condenser. Always verify the OEM part number HN51JD026 on your existing contactor's label or your unit's wiring diagram before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today and get your system back online fast.