5-stage transformer for speed adjustment. For controlling three-phase fans. With operating indicator light. Article: TR 2.5-2, Voltage type: three-phase current, Rated voltage: 400 V, Mains frequency: 50 Hz / 60 Hz, Rated power: 1250 W, Maximum load: 2.5 A, Protection class: IP 54, Secondary voltage: 105 V / 150 V / 190 V / 250 V / 400 V, Installation type: surface-mounted, Housing material: plastic, Color: light gray, similar to RAL 7035, Weight: 10.07 kg, Weight with packaging: 10.98 kg, Width: 228 mm, Height: 310 mm, Depth: 225 mm, Width with packaging: 255 mm, Height with packaging: 340 mm, Depth with packaging: 265 mm, Ambient temperature: 0 °C to 40 °C