2000VA variable voltage regulator input voltage: 110VAC / 60Hz. It is a contact voltage regulator with wide voltage range (0-130V). The autotransformer with a exquisite rotating handle,comfortable grip and flexible operation, easy to control output voltage what you need. The auto transformer is built-in good quality material copper coil, and with thermal grid design is more easy let the machine cool, more secure and durable. This 2KW autotransformer be widely used in motor speed control, label printing machine, EE labs, test for railroad switching, power supplies, satellite, equipment, telecommunication equipment. Please note that most device have surge (when first turn on) much higher than operating amp rating. E.g, motor with 10 amp rating may have over 20 amp surge, and you will need 20 amp transformer.