Schweitzer Engineering Labs

Schweitzer Engineering Laboratories (SEL) invents, designs, and manufactures digital products and systems that protect, automate, and control electric power systems. Their core offerings include the world's first digital protective relays, alongside embedded system solutions for monitoring and metering critical infrastructure. The company's technology focuses on enhancing the safety, reliability, and efficiency of power grids globally.

The company was founded in 1982 by Edmund O. Schweitzer III, who started the venture in his Pullman, Washington, basement. Dr. Schweitzer's foundational insight was the development of the microprocessor-based digital protective relay, a significant advancement for power system security. His initial mission aimed to make electric power systems safer and more reliable through innovative engineering.

SEL's products serve utilities and industries worldwide, providing robust solutions for critical power infrastructure. The company's vision centers on continuously innovating to make electric power systems more reliable, secure, and economical. They strive to deliver superior solutions that empower customers to manage and safeguard their essential electrical assets.