Three phase speed controller by auto-transformer.
IP54 ABS casing for RMT-1,5 and RMT-2,5 models.
IP54 metallic casing from RMT-5 to RMT-12 models.
Electrical supply: 3/400V/50-60Hz.
Five position knob (0/1/2/3/4).
Voltage: 90, 150, 200, 280 and 400 V.
Pilot light