STRA-1-25L22 (2.5A)

The STR-1 series of transformer fan speed controllers regulate the rotational speed of single-phase voltage controllable motors by varying the output voltage. They are
equipped with auto-transformer(s) and control the speed manually in five steps. The technology used provides a regulated output voltage with a perfect sinusoidal shape.
The controllers up to 7,5 A are available in plastic enclosure, while the models above 7,5 A are available in a metal enclosure.