Description

Join IMA in Lewiston as we tour the SEL facility!

Schweitzer Engineering Laboratories was founded in 1982 after Edmund O. Schweitzer, III invented the first microprocessor-based digital protective relay. The SEL-21 was the culmination of research done for Schweitzer’s doctoral thesis, and it ushered in a new era of power system protection and went on to revolutionize the electric power industry. 

SEL specializes in creating digital products and systems that protect, control, and automate power systems around the world. A 100 percent employee-owned company headquartered in Pullman, Washington, SEL has manufactured products in the United States since 1984 and serves customers worldwide.