AC Tech SF420 is a 2 HP (1.5 kW) soft-start drive for three-phase motors, designed to run from 400–480 V three-phase power and deliver a 0–460 V three-phase output to the motor. It belongs to Lenze AC Tech’s SCF Series and is configured in an IP20 enclosure suitable for panel mounting (size A3). This compact device provides controlled motor startup by ramping voltage to minimize inrush and mechanical stress, making it well suited for applications such as fans, pumps, and small conveyors where gentle acceleration is beneficial.
