Check the listing for details. Step Up/ Down 220v to 110v Electrical Power Voltage Converter Transformer 5000W. Color: Black, Condition: New. Listed at 110.72 USD. 5000 Watt Voltage Transformer Converter with Builtin Regulator Step Up/Down 110V/220V Description This transformer can change the voltage from 110V to 220V or 220V to 110V. It has overload protection, so you don't have to worry about safety issues caused by overloads. This step-up/down transformer provides you with a safe, reliable, economical and convenient solution to meet your requirements for voltage conversion. Key Features Quality Materials: This transformer is made of iron and aluminum which is wear-resistant and rust-resistant. Therefore, it is durable, sturdy, and has a long service life. High-Quality Coils: This transformer uses high-quality coils with low standby loss, long service life and a high energy conversion rate. High Efficiency and Energy Saving: Built.