APC Smart-UPS RT is a family of high performance UPSs for servers, networking equipment, telecommunication systems, industrial and medical equipment, and other mission-critical applications. Smart-UPS RT UPSs are based on the field-proven, industry-leading Smart-UPS functionality, but features double conversion on-line topology, which delivers tight voltage and frequency regulation, zero transfer time to and from battery, and input power factor correction. While offering advanced performance and high availability features, the Smart-UPS RT can be managed using PowerChute software, as well as an array of SmartSlot accessories.

Smart-UPS RT provides battery back-up to the load through the use of internal batteries. However, an unlimited number of external battery packs can be added to meet desired levels of runtime.