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The genuine OEM Lennox 13B01 potential relay controls the start winding circuit of your compressor or motor, disconnecting the start capacitor once the motor reaches running speed. It is a voltage-sensitive component engineered to the exact pickup and dropout specifications required for reliable, safe compressor starts in Lennox condensing units and heat pumps.
When a potential relay fails, you may notice the compressor humming but failing to start, tripped breakers, hard starting, short cycling, or a burned start capacitor. Because the relay's coil voltage and contact ratings must match the motor exactly, a mismatched aftermarket part can leave the start capacitor energized and destroy the compressor.
Choosing the OEM Lennox 13B01 guarantees the correct pickup/dropout voltage and contact rating for your equipment, protecting your compressor investment and maintaining rated performance. Direct factory-fit replacement — no adapters or guesswork required.