Abbreviated Switchgear & Components Abbreviated Switchgear & Components Emax Link 2The ABB Emax Link 2 UR 1558 structures provide a turnkey solution for OEMs and are designed and tested to UL 1558 standards. PowerCubeMedium voltage preassembled units to be used as components for primary distribution air-insulated switchgear. Publications Application and TechnicalCatalogs and Buyers GuidesData Sheets Other Switchgear Low Voltage Switchgear Previous Generation Switchgear Medium Voltage Switchgear