"Put simply, we keep the lights on"

SEL Founder, and Chief Technology Officer
-Dr. Edmund O. Schweizer Jr.-

SEL specializes in creating digital products and systems that protect, control, and automate power systems around the world.

The company headquatered in Pullman, Washington, United States, SEL has manufactured products in the United States since 1984 and serves customers worldwide.

SEL products account for more than 70% of the North American market, and are designed and tested to withstand extreme envionmntal conditions.

Whether they're installed in a control house or a substation yard,
on a line pole or a factory floor, you can be sure
that your SEL devices are up to the challange.

[The Industry’s Most Reliable Devices]

* SEL proud to offer the electric power industry’s best product
warranty
* SEL products are guaranteed for ten years
* SEL also provide free technical support as long as your product
remains in service

As a Korean partner of SEL, Youngin Energy Solutions is supplying the protection relays & systems with integrity and innovative new technologies to the electricity sector in Korea, and Youngin Energy Solutions strive to ensure that high-quality electricity is available to customers.

Youngin Energy Solutions is an electrical engineering company that provides total support systems in the fields of power generation, transmission, substation, plant engineering, design, supervision, IT and system protection control.