Schweitzer Engineering Laboratories

Schweitzer Engineering Laboratories, Inc. (SEL) provides systems, services, and products for the protection, monitoring, control, automation, security, communications, and metering of electric power systems worldwide. Our solutions are used by utilities and mission-critical industrial applications that require reliable operation in harsh environments, such as electrical substations, commercial sites, and generating, manufacturing, and processing plants.

Automation and Integration
SEL delivers reliable and economical automation and integration solutions that address the entire application spectrum, from communicating with a single protective relay to integrating and automating the metering, control, reporting, and protection of large systems.

SEL protective relays provide protection for electrical transmission, generation, and distribution applications, including distributed generation and motor protection. Many protective relays include arc-flash protection.

Apply SEL networking, control, and communications solutions to integrate devices for data acquisition plus remote and local control. SEL offers serial, Ethernet, fiber, and wireless communications solutions with integrated security features that are used to securely move data and information over both local-area networks and wide-area networks.

SEL real-time automation controllers and rugged computing products provide industry-leading reliability and availability. These automation solutions are used for protocol conversion, local human-machine interfaces (HMIs), event report collection, data concentration, deterministic automation with the programmable IEC 61131 logic engine, or reliable operation of your software programs.

Outstanding Customer Service and Support
SEL is recognized in the industry for our outstanding customer service and technical support. We provide a standard ten-year, no-questions-asked, worldwide warranty on our products.