html{display:none} Quality Philosophy | Schweitzer Engineering Laboratories

Quality Philosophy

Quality Philosophy

We take care of our products so that our products can take care of you.

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Quality Supporting Critical Infrastructure

SEL products and technologies are critical for the safe, reliable operation of power systems around the world, so our products are built with the highest-quality components in SEL facilities by SEL employees. You can be sure that the SEL products protecting your system have been rigorously tested. And in the event that your product doesn’t perform as expected, we offer an industry-leading ten-year warranty and free technical support for the life of the product.

Using the principles of World Class Manufacturing, we strive to constantly improve our processes and services to give you the best products at the lowest cost. From initial research and design to final manufacture and distribution, we believe that true quality lies in exceeding our customers’ expectations—and we’re always looking for ways to make electric power safer, more reliable, and more economical.

Quality at SEL

Ten-year warranty

Free support for the life of every SEL product

Onsite A2LA Accredited Laboratory,
Certificate Numbers 3354.01 and 3354.02

All electronic devices manufactured in the USA

Product reliability calculated from field experiences

Support centers in multiple countries