Schweitzer Engineering Laboratories (SEL) invents, designs, and builds digital products and systems that protect power grids around the world. This technology prevents blackouts and enables customers to improve power system reliability and safety at a reduced cost. A 100 percent employee-owned company headquartered in Pullman, Washington, SEL has manufactured products in the United States since 1984 and now serves customers worldwide. Our mission is simple: to make electric power safer, more reliable, and more economical. This is done by offering a breadth of product offerings ranging from multi-function protective relays to industrial PC’s and rotary switches.