This series is used for moderate to high power applications. The compact GA series high current switches are butt contact types and are air cylinder operated. Ratings are 12 to 80kV PK test with current level ranges of 400 or 600 amps continuous; to 10,000 amps RMS momentary, 10 cycle; and to 50,000 amps capacitor discharge, 20 uSEC. Units are designed with 2 or more SPDT auxiliary contacts or air valve type position indicators as optional accessories.