Schweitzer Engineering Laboratories

About Us

Schweitzer Engineering Laboratories (SEL) is a leading provider of innovative solutions for electric power systems, headquartered in Pullman, Washington. Founded in 1982 by J. Patrick Schweitzer, SEL is dedicated to creating products that improve the reliability and efficiency of electrical networks worldwide. With a commitment to quality, customer service, and technological advancement, Schweitzer Engineering Laboratories engineers a diverse range of protective relays, automation solutions, and communication devices. Our mission is to empower utility companies and industries with advanced tools to ensure safe and reliable power delivery.