Transformer speed controllers

  1. Homepage
  2. Products
  3. Controls
  4. Transformer speed controllers

ARW-…[-1,2; -3; -5] (1~230V/50Hz) five-speed transformer speed controllers or RTRD [-2;-4;-7] (3~400V/50Hz)  fans are intended for air flow control. Fan speeds are selected manually. The box should be supplied from main switchgear equipped with main switch breaker, differential protection as well as thermal and short circuit protection. Three sizes of the controller are available, differing  in terms of power supply and rated current.

Technical data

  • Type

    ARW-1,2 

    ARW-3 ARW-5
    Voltage [V] 230 230 230
    Height [mm] 123 173 280
    Width [mm] 77 90 200
    Depth [mm] 71 89 160
    Protection level IP30 IP30 IP30
  • Type

    RTRD-2

    RTRD-4 RTRD-7
    Voltage [V] 400 400 400
    Height [mm] 255 309 309
    Width [mm] 190 162 162
    Depth [mm] 135 160 160
    Protection level IP21 IP21 IP21