‘RE’ VARITX is the trade name of the continuously variable voltage Auto transformer manufactured by ‘RE’. It is an most economical effective device for step less and continuous voltage control of Single Phase and 3 phase AC voltages for numerous applications for the industrial and Laboratories usages for testing and calibration purposes. ‘RE’ VARITX are used for operation at nominal voltage of 240V AC to give output Voltages between 0 to 270V at 50/60 Hz by a Booster Auto Transformer. Three such ‘RE’ VARITX connected electrically in star and mechanically interlocked to move together are used for operation on 415 Volts, 3 phase AC supply to give output from voltage from 0 to 470 Volt at 50/60Hz. ‘RE’ Manufactured VARITX is having good Regulation with Negligible waveform distortion. Varitx are robust, energy efficient, noiseless and easy to operate with excellent short time over load capabilities. ‘RE’ manufacturers specialized Oil cooled or air cooled motorized/manually operated VARITX upto 800 Amps with supply voltage of 240 Volts to give output voltages from 0 to 350 Volts, 3 Phase VARITX up to 800Amps with input supply voltage of 415 Volt 3 Phase to give output Voltages from 0 to 600V.