SEL introduced the world's first digital relay in 1984, revolutionizing the power protection industry by offering fault locating and other features for a fraction of the cost of earlier systems. In the years since, we have grown and developed a complete line of products and services for the protection, monitoring, control, automation, and metering of electric power systems.

Since its inception, SEL University has had one clear mission-to provide the education and training needed to make electric power safer, more reliable, and more economical. We've developed programs that help you meet the technical challenges and complexities of integrating digitally based technologies into your expanding power system infrastructure.