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​​GAS INSULATED SUBSTATIONS  |     advanced designs, range of applications, and superior performance






​Mitsubishi Electric’s commitment to progressive research, development and testing is evident through numerous technological advancements in the last century, including:
  The first gas insulated circuit breakers in 1965
  The world’s first 550kV GIS in 1976
  Testing of the first 1,100kV GIS    in 1994
  Installing two 245kV, 80kA gas insulated substations in North America

Today, with the availability of high power, high voltage, climate control and vibration laboratories, Mitsubishi Electric GIS systems can be designed and tested to meet the demands of any application.




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​​​Corporate Headquarters
Thorn Hill Industrial Park
530 Keystone Drive
Warrendale, PA 15086
Phone: (724) 778-5111
Facsimile: (724) 778-5209