SEL Solutions

Schweitzer Engineering Laboratories has delivered solutions for over 25 years that make electric power safer, more reliable, and more economical. SEL invented the world’s first digital distance relay in 1984, revolutionizing fault location, event analysis, and protection.

Automation and Integration

SEL information processors enable you to design and implement both simple and complex intelligent electronic device (IED) integration solutions. Supported peer-to-peer technologies include SEL’s patented Mirrored Bits® communications and IEC 61850.

Network Switch

SEL Network switches can operate reliably in harsh environments, withstanding temperature extremes, electrical transients, electrostatic discharges, vibration, and more. Connect the components of your network with highly reliable SEL components and cables. Convert from copper to fiber-optic Ethernet links to improve safety and data integrity in applications near electrical lines or equipment.