The RSE4803-B is a Soft Start / Stop Supply 3A 277/480V. Load Compact easy-to-use AC semiconductor motor controller. With this controller 3- phase motors with nominal load currents up to 12 A can be soft-started and/or soft stopped. Starting and stopping time as well as initial torque can be independently adjusted by built-in potentiometers. Type Module Motor Type AC Motor Control / Drive Type Soft Start / Stop Number of Motors 1 Voltage - Load 277/480V Current - Output 3A Mounting Type DIN Rail Operating Temperature -20°C ~ 50°C