SEL partners with customers around the world to ensure the safe, reliable, and economical delivery of electric power. We design, manufacture, and support a complete line of products and services, ranging from generator and transmission protection to distribution automation and control systems.
SEL was founded in 1982 when Dr. Edmund O. Schweitzer, III, invented the first all-digital protective relay, reducing the cost and complexity of power protection and revolutionizing the electric power industry. Today, SEL provides products, solutions, and services in 168 countries, employs approximately 5,500 people worldwide, and is 100 percent employee-owned.
