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This genuine OEM Carrier contactor (part number HN53CB115) is the factory-specified replacement for the Carrier 09DK028600 commercial HVAC unit. The contactor is a heavy-duty, high-voltage relay that opens and closes the power circuit to your compressor and fan motors in response to a 24V or 115V control signal from the thermostat or control board. When the contactor fails — due to pitted contacts, a burned coil, or a stuck plunger — the unit will either fail to start entirely, drop out mid-cycle, or run continuously without responding to controls.
Compatibility: Confirmed fit for Carrier model 09DK028600 commercial HVAC equipment. Cross-references include HN53TB115, HN52KC016, and HN72AZ301. Always verify pole count, amperage, and coil voltage against your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you buy — just reach out before placing your order.