VA – Speed Controller
- The VA range are an electronic type speed-controllers which provide infinite variation of fan speeds from 100% down to approximately 30% of full speed.
- When used to control a number of identical fans the sum of the full load amps of all the connected fans must not exceed 85% of the maximum rating of the controller.
- The fans should be identical. Power consumption is reduced by up to 70%.
- The motors must be designed for speed control.