5-stage transformer for speed adjustment. For controlling AC fans. With operating indicator light. Additional switching contact (230 V) e.g. B. for controlling a flap. Article: TRE 0.4-2, Voltage type: alternating current, Rated voltage: 230 V, Mains frequency: 50 Hz / 60 Hz, Rated power: 72 W, Maximum load: 0.4 A, Protection class: IP 54, Secondary voltage: 85 V / 115 V / 150 V / 180 V / 230 V, Installation type: surface-mounted, Housing material: plastic, Color: light gray, similar to RAL 7035, Weight: 1.45 kg, Weight with packaging: 1.96 kg, Width: 195 mm, Height: 148 mm, Depth: 175 mm, Width with packaging: 235 mm, Height with packaging: 235 mm, Depth with packaging: 195 mm, Ambient temperature: 0 °C to 40 °C