Our Commitment is Quality, our Passion is to Provide Great Service.

Sei is a leading manufacturer and supplier of electrical transformer components recognized for quality products and superior service.

Accessories and Components
                    for Transformers
Load Break Switch

Sei’s factory is located in Brasil with local offices in USA, Mexico, Colombia, Argentina and China.

SEi’s DNA: Quality is our commitment while providing great service is our passion.

 De-Energized Tap
                Changers (DETC)