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SEL Quality

We all own Quality at SEL

SEL Quality

A Note From the Director of Quality

At SEL, our employees drive quality and are driven by it. Edmund O. Schweitzer, III, taught the very first SEL employee that they owned quality, and to this day we continue to do the same for every new employee. Every SEL employee knows that their quality responsibility is to understand the need or problem to be solved, create effective solutions, and seek to simplify our processes and products. It’s what we call: “Understand. Create. Simplify.”

We warranty our products for 10 years, design them to last more than 20 years, and after serving our customers for over 30 years, we don’t charge for repairs—regardless of the age of the product. One of our reliability measures is the mean time between returns for repair (MTBR). Our observed MTBR is well over 200 years and continues to increase. This means, if you have 200 SEL products installed on your system, you can expect to return less than one product per year for any reason, including failure or damage due to misuse, lightning, fire, water, ice, solar, chemical corrosion, wildlife, overvoltage, overcurrent, vandalism, and user error. If a customer returns it for repair, we count it in this reliability measure.

Our Quality Management System is certified to the International Organization for Standardization (ISO) 9001 standard, Quality Management Systems Requirements. This certification is evidence that our critical design, manufacturing, and business processes meet the exacting requirements of this internationally recognized standard.

SEL’s commitment to quality is a necessary and integral part of our business because of the lives and critical infrastructure our products protect. As we follow our quality policy to understand, create, and simplify, we invent the future of electric power.

Travis Mooney, Director of Quality
Schweitzer Engineering Laboratories, Inc.

Quality at SEL

  • Worldwide ten-year warranty
  • Onsite A2LA Accredited Laboratory, Certificate Numbers: 3354.01 and 3354.02
  • Electronics manufactured in the USA
  • Product reliability calculated from field experiences, not predicted from models
  • Support centers close to our customers around the world
  • Free support for the life of every SEL product


SEL Manufacturing

SEL Reliability

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