PEACO SUPPORT offers a wide range of three phase auto transformers from 10 kVA to 2500 kVA for your customized needs, primary and secondary voltages can be 120V/ 208V/ 220V/ 380V/ 400V/ 440V/ 415V/ 480V AC, etc., such as 220V to 240V, 380V to 415V, 415V to 480V, 440V to 220V, 690V to 400V and more, optional output frequency 50Hz/60Hz, max. working efficiency 90%, protective enclosure IP20, wires can be made of reliable enameled copper or aluminum for options.