Schweitzer Engineering Laboratories, Inc. (SEL) invents, designs, manufactures, and supports digital products and systems that protect, automate, control, and monitor critical electric power infrastructure. The company's founder invented the first microprocessor-based digital protective relay - a development that made reliable transmission line protection available at a fraction of the cost of traditional electromechanical equipment. Today, SEL's portfolio covers the full range of power system protection, control, monitoring, and automation for utilities and industrial customers worldwide.
SEL is headquartered in Pullman, Washington, and manufactures all of its products in the United States across five manufacturing centers. Its customers span more than 170 countries, supported by a network of over 100 offices worldwide. The company backs its products with a ten-year worldwide warranty.
With over 7,000 employee owners, SEL operates as a 100% employee-owned company. That structure shapes its stated priorities: long-term customer value over short-term financial results, and a sustained focus on quality, integrity, and technical support. Employee ownership is not a benefit program but the fundamental ownership model of the business.
