Schweitzer Engineering Laboratories (SEL) is a 100 percent employee-owned company that invents, designs, and builds digital products and systems to protect, automate, and control critical electric power infrastructure. The firm, which serves utilities and industries in more than 170 countries, maintains over 100 worldwide offices and five manufacturing centres in the United States. Its headquarters are located in Pullman, Washington.
SEL's technical expertise spans digital protective relays, and the monitoring, control and automation of power systems. The company pioneered the microprocessor-based digital protective relay, a development that provided reliable transmission line protection at a fraction of the cost of traditional electromechanical relays. With more than 7,000 employee owners, the firm operates a culture of shared ownership that prioritises long-term customer value over short-term financial cycles.
The company's operations are underpinned by commitments to quality, integrity and customer service. This approach has supported its expansion into a global supplier of products designed for the reliable functioning of electric power grids.
