• Automotive

    The Power To Transform™

    In over 40 countries around the world

Welcome to RoMan

RoMan is an industry-leading manufacturer of AC water-cooled transformers and DC Power Supplies and related specialty products used in resistance welding; melting, boosting, refining and forming of glass; and vacuum and atmospheric furnace applications.

As a manufacturer of high-current, low-voltage power sources, we use the finest materials available to offer thousands of design and customized options built to the highest quality standards and to your specific industry and application requirements. And all of our products are backed-up by a unique and industry leading warranty on all of our equipment.

To download the warranty information please click here>>>

We also provide you value-added, application-centric technical support and industry specific application engineering services.

Our products and services have made us the choice of hundreds of companies throughout the world.

Company Knowledge
MFDC Lightweight 2

Additional Resources

View Articles, Blog Posts, Case Studies, and Whitepapers

Blog Post

As the cost of electrical energy continues to rise, manufacturers are looking for ways to reduce power consumption—energy lost in transmission. In this Energy Savings study, we assess how to do that.

Blog Post

Mark Siehling, RoMan’s Vice President of Engineering, discusses the best means to protect resistance welding (RW) transformers and medium frequency direct current (MFDC) transformer rectifiers from failure due to over-temperature.

Blog Post

Don DeCorte, RoMan’s Vice President—Resistance Welding Products, explains the strengths and weaknesses of using AC, MFDC and CD welding processes for projection welding of nuts and studs.