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This is the factory OEM replacement contactor (part number HN52TC040) for the Carrier LC748LCCSRMYX2601 condensing unit. The contactor is the primary high-voltage switching relay in your system — it receives a 24V signal from the thermostat and closes to send line voltage (typically 240V) to the compressor and condenser fan motor. When the contactor fails, symptoms include an air conditioner that won't turn on at all, a unit that hums but never starts, or one that trips the breaker repeatedly. Pitted or burnt contacts are the most common cause of failure and are easily visible on inspection.
Compatibility: Designed as a direct OEM replacement for the Carrier LC748LCCSRMYX2601 condensing unit. Always confirm the coil voltage and pole configuration printed on your existing contactor's label before ordering. If you have questions about fitment, our HVAC parts specialists verify compatibility before you purchase — no guesswork required. Order today and get your system back up and running fast.