html{display:none} Distribution | Schweitzer Engineering Laboratories


From protection fundamentals to advanced automation, SEL offers the most reliable and efficient solutions for every section of the electric distribution system.

Distribution hero

The complex demands of distributed generation, renewable resources, and an evolving customer base present difficult challenges to distribution systems everywhere. SEL has been solving the electric power industry’s toughest challenges since 1984, when we introduced the world’s first digital protective relay. You can rely on us to help you meet emerging needs and prepare for the future.

Feeder Protection

Ensure the safety and reliability of distribution feeder systems and mission-critical substation assets with the most reliable solutions in the industry.

Recloser Control

Use automation-ready SEL recloser controls to isolate outages, transfer loads, clear temporary faults, and tie distributed generation into the grid.


Use secure communications solutions from SEL to monitor the distribution system, accurately locate faults, facilitate automation, and maximize reliability.


Automate your location, isolation, and system restoration schemes with scalable and modular distribution automation solutions. Increase the operational efficiency of your system, and reduce operating costs.

Power Quality

Increase power efficiency and reliability by improving your system’s power factor and voltage stability. SEL power quality solutions can be implemented as independent applications or as a system-wide coordinated solution.


SEL University, Conferences, Tradeshows, Seminars

SEL meets your immediate and long-term workforce education needs by offering SEL University courses, seminars, conference presentations, and attending tradeshows. SEL University complies with the ANSI/IACET Standard, which is recognized internationally as a standard of excellence in instructional practice. As a result of this accreditation, SEL University is authorized to issue the IACET CEU.

SEL Solutions in Action


Belgium featured

Belgium Integrates Offshore Wind Power Into European Grid

See how an SEL special protection scheme allows Belgian grid operator Elia to integrate 8,000 gigawatt-hours of renewable energy per year into the European power grid. It protects the world’s fourth-largest offshore wind-power installation and a 1,000 MW HVdc link between Belgium and the UK.

MSU Featured

Microgrid Solution Plays Big on Campus

An SEL protection and control system integrates Montclair State University’s on-campus generation and distribution systems with the regional utility grid, while also allowing the campus to operate as an islanded microgrid if necessary.

Project Highlights


Pend Oreille Utility Benefits From Innovative RTU Upgrade Strategy

Mississippi Power - Featured

Self-Healing Network Restores Power Fast


SEL Brings NamPower into 21st Century


Distribution Automation Controller Helps AEP Advance

Questions? Contact Us!

We’re happy to answer all your questions and help develop the best solution for your needs.

Contact Engineering Services


Unbeatable Support

SEL support teams are stationed in regional offices around the world and staffed with application engineers who are experts in our products and in power system applications.

Technical support for SEL-manufactured devices is always free. No matter how often you need to call or how long your SEL products have been in service, you’ll reach an SEL expert who can provide the service and support you need.

Our cybersecurity team is always ready with the information and resources needed to keep your OT networks and critical systems secure and working effectively. Cyber services support contracts can include incident response, audits, system hardening, and more, depending on your anticipated needs.