Systemair Step switch S-DT2SKT, Y/D - star/delta, 4kW, 400V, IP54

Switching and protecting unit star/triangle For changing speed of three phase motors with 2 speed by star/triangle switching. 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.