Single-Phase Autotransformer Speed Controller for Hood Fans

Single-phase autotransformer for stepped speed control of a single-phase fan: centrifugal (snail) motor, motorised extraction box or roof fan. Low setting for quiet periods, high setting for full extraction during service. Check in the motor manual that it accepts voltage variation. Choose a current rating at least equal to the motor nameplate current. The "With" version includes a mushroom-head emergency stop button. Connection by an electrician or your installer, in an accessible place away from grease and heat. Refs. TGRVM5+CP, TGRVM7+CP, TGRVM5, TGRVM7.