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Company Overview
In 1950, after presenting ideas and prototypes to Commonwealth Edison in Chicago, Edmund O. Schweitzer Jr. founded E. O. Schweitzer Manufacturing for the purpose of designing and manufacturing line-powered fault indicators.
Today, utilities around the world rely on fault indicator technology to reduce fault finding time and quickly restore system power after a fault occurs. EOS Manufacturing has sold millions of high-quality fault indicators, voltage indicators and sensors, and split-core current transformers to over 1,000 customers internationally.
EOS Manufacturing became a division of Schweitzer Engineering Laboratories, Inc.(SEL) in 2005 and now sells its products marked with the SEL logo. The high-quality fault indicators and sensors fit well with the SEL mission—to make electric power safer, more reliable, and more economical.
In turn, the SEL commitment to quality and innovation continues to help EOS Manufacturing develop new products and better serve its customers. SEL protective relays and recloser controls, coupled with SEL LINAM®, AutoRANGER™, and RadioRANGER™ fault indicators, improve the reliability of electrical distribution systems.
Learn More About EOS History
Letter From the President
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