Systemair Step switch S-DT2DKT, Y/YY - tapped windings, 4kW, 400V, IP54

Switching and protecting unit; Dahlander Y/YY For changing speed of three phase motors with 2 speed. Automatic cut out of motor when thermal contact trip (overheating of motor). Reset by setting the main switch to 0 and restart. Plastic casing for surface mounting, assembly without casing is possible on a mounting rail.