CHANGEOVER SWITCHES • Steel or polyester enclosures• Equipped with a SIRCO VM1, a SIRCOVER, aSIRCOVER by-pass, an ATyS or an ATyS M more CHANGEOVER SWITCHES • Steel or polyester enclosures• Equipped with a SIRCO VM1, a SIRCOVER, aSIRCOVER by-pass, an ATyS or an ATyS M more