Paralleling Switchgear (PSG) Paralleling Switchgear Digital Commander Paralleling SwitchgearA new system design that has evolved and adapted to the changing technologies in engine generator design, switchgear controls and monitoring systems. Zenith Energy Commander Paralleling Switchgear (PSG)Provides control for multiple power sources, usually two or more generator sets. Provides solutions from medium to very complex. Related Services Critical Power Services Related Industries Data Center Solutions Healthcare Publications BrochuresCSI Master FormatService and MaintenanceSpecifications - Guideform