No downtime. Routine maintenance can be performed at any hour. A PDU (Power Distribution Unit) with 7 outlets for distribution to your load. Rackmount – MBS can be mounted both horizontally or vertically (ORU) into a rack. Wallmount option, vertically or horizontally. UPS Mountable. Designed to attach to PowerShield Centurion RT and Commander RT ranges. Suitable for all UPS topologies including offline, line interactive and true online double conversion.