Variable Transformer AC Voltage Regulator Converter 500VA 3000VA Built in Copper Coil for Power Supply,1KVA

✔【Built-in pure copper coil】, the voltage transformer , more secure and durable so as to achieve high efficiency and with no waveform distortion. ✔【AC POWER SUPPLY ADJUSTABLE】- This is a brand new variable transformer. output voltage can be adjusted from 0 to 300V AC. ✔【COMPACT & HIGH ACCURACY】- Featuring clear voltage output meter / LCD screen, and precise metal pressure gauge, the variable transformer is designed with high grade accuracy and compact for easy transport. ✔【SAFETY PROTECTION】- Featuring a high accuracy, reliability and perfect limit current protection, thermal protection, voltage overload protection, short-circuit protection. A grounding port designed onto the device for much more stable and secure protections. 1 power plug is available. ✔【WIDE APPLICATION】- Widely used for motor speed control, label printing machine, labs, test for railroad switching, power supplies, satellite, equipment, telecommunication equipment, ect.