RTRE 7 Speed Controller


This Systemair 7 speed controller works in conjunction with the single-phase acoustic centrifugal square duct box fan we have for sale here.

RTRE 7 Speed Controller with manual five-step transformer (with motor protection)

A single-phase transformer which controls the fan speed by altering the supply voltage in five fixed steps. The steps are adjusted manually, using the control knob on the front of the unit. An integral motor protection device is included which cuts the supply voltage to the fan if the thermal contact in the fan motor is activated. The unit is reset by turning the knob to “0” for 10 seconds, after which the unit restarts.