The APC Smart-UPS RT 15kVA is a double-conversion online UPS designed to protect servers, networking gear, and other critical equipment from power outages and fluctuations. Running online double-conversion means the load is continuously powered from the inverter, giving a genuinely seamless transfer on mains failure rather than the brief switchover gap of a line-interactive design. This is the 230V "International" variant, sized for markets like South Africa. At 15kVA it's suited to server rooms, small data centres, or critical infrastructure racks rather than a single desktop PC, and would typically be paired with external battery packs for extended runtime depending on the connected load.