We partner with customers around the world to improve power systems.

Partnership

Quality, integrity, community—our values are behind everything we do.

SEL conducts business following a strong set of core values—quality, customer focus, discipline, communication, integrity, creativity, community, ownership, and dignity of work.

Our Values—More Than Just Words

Since 1984, SEL has grown from 1 employee to more than 6,000 worldwide.

Follow SEL's journey from the first microprocessor-based relay invented in 1982 to our continued innovation on the cutting edge of power system protection.

The History of Schweitzer Engineering Laboratories | SEL

At SEL, shared ownership is a key strategy for sustaining growth, stability, and customer focus. Our employees are our shareholders, so there’s no short-term pressure to achieve quarterly results at the expense of what’s best for our customers or company in the long run.

100% employee-owned

SEL Employee Stock-Ownership is a fully employer-funded retirement plan that allows us access to capital for growth and unique benefits.

SEL Employee Ownership

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SEL President Dave Whitehead hosts the Schweitzer Drive podcast, where he talks with the entrepreneurs, innovators, and experts who are inventing the future of electric power. Electricity is fundamental to our daily lives, and yet it’s something so many take for granted. Come learn about, explore, and celebrate electric power on Schweitzer Drive.

Schweitzer Drive podcast

Schweitzer Drive

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Learn more about SEL

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The <span class="selism--small-caps">acSELerator</span> Architect SEL-5032 application configures and documents IEC 61850 systems, including GOOSE and Sampled Values for Process Bus, and MMS for SCADA applications

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Easily edit the IEC 61850 server model for an SEL device using <span class="selism--small-caps">acSELerator</span> Architect SEL-5032 Software.

Improve Productivity With IEC 61850 Configuration Software

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The SEL Axion is a fully integrated modular input/output (I/O) and control solution suitable for many utility and industrial applications. It combines the communications, built-in security, and IEC 61131 logic engine of the SEL Real-Time Automation Controller (RTAC) family with a durable suite of I/O modules that provide high-speed deterministic control performance over an Ethernet network.

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With a 5x increase in processing performance, the upgraded SEL-2241 Real-Time Automation Controller (RTAC) Module now matches the processing power of our popular SEL-3350 RTAC, but in a modular form-factor. This enhancement enables the SEL-2240 Axion to serve as an all-in-one remote terminal unit (RTU), bay controller, power system monitor, digital fault recorder, continuous waveform streaming device, and more. 

Coming Soon: The Next-Generation Axion RTAC Module

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SEL and San Diego Gas and Electric partnered to create a falling conductor mitigation solution that de-energizes broken power lines before they reach the ground—minimizing risk of wildfire and other hazardous conditions. 

Partnership and Innovation: Mitigating Wildfire Risk in Southern California

Learn about the partnership and innovation behind fire mitigation and public safety efforts in Southern California. 

Wildfire Mitigation in Southern California

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See how AES Ohio partnered with SEL to improve reliability and update their power system protection and coordination with our innovative Wireless Protection System.

Wireless Protection Communications—Innovating to Improve Reliability

To coordinate its numerous close-proximity recloser controls, AES Ohio implemented a wireless communications solution that transmits fault status at protection speed.

AES Ohio Improves Distribution Reliability With Wireless Protection Communications

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SEL-T35

Capture every disturbance, including harmonics, distortion, and subsynchronous oscillations (SSO).  The SEL-T35 streams high-precision ac and dc voltage and current measurements to Synchrowave software for wide-area, real-time data analysis, trending, and alarming.

Coming Soon: The SEL-T35 Time-Domain Power Monitor

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Learn how ELES, a utility in Slovenia, is using operational technology (OT) software-defined networking (SDN) to defend their country’s transmission system.

Defending Critical Substation Communications in Slovenia

Learn how a utility in Slovenia is using operational technology (OT) software-defined networking (SDN) to defend the country's transmission system.

Now hiring for multiple roles

SEL provides complete power system protection, control, monitoring, automation, and integration for utilities and industries worldwide. SEL products, systems, services, and training make electric power safer, more reliable, and more economical.

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Contact technical support

Customer service and technical support teams are located in regional offices around the world, ready to help you get the answers and solutions you need.

Schweitzer Engineering Laboratories

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SEL Technical Experts Recognized for Contributions to Industry

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SEL Raises Starting Hourly Wage to $20

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Improve Productivity With IEC 61850 Configuration Software

Now hiring for multiple roles

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