Breve three-phase autotransformer speed controllers and transformers on display

Photo: Mariusz Młynarczyk / CloudAir.tech

Close-up of Breve fan speed controllers on white display plinths: two vented steel autotransformer regulator housings with rotary selector switches and two dark blue transformers in front. Smaller plastic-cased electronic regulators stand on the tier behind. The Polish manufacturer focused its display on speed control for ventilation fans.