OEM Lennox Motor Start Potential Relay — 58327

The genuine OEM Lennox 58327 motor start potential relay controls the start capacitor circuit on your compressor or motor, giving the extra starting torque needed at startup and then dropping the start capacitor out of the circuit once the motor reaches running speed. This precise switching prevents the start capacitor from overheating and protects the compressor windings.

Common failure symptoms: A failed potential relay commonly causes hard starting, humming or buzzing without startup, tripped breakers, a compressor that won't come on, or a burned-out start capacitor. Because the relay's pickup and dropout voltages are matched to the motor, a weak or stuck relay leaves the start capacitor energized too long, damaging both components.

Why OEM matters: The Lennox 58327 is spec'd to the exact coil voltage and contact ratings your compressor requires — a generic relay with mismatched pickup/dropout voltage can fail to drop the capacitor and destroy the compressor. The OEM part guarantees correct switching, reliable starts, and warranty compatibility. In stock and ships same day when ordered before 3PM CST.