Mitsubishi 9900AEGIS Series UPS is the smallest in the popular 9900 series. Like all other Mitsubishi Electric UPSs, the AEGIS is a three-phase, on-line double-conversion system and features Mitsubishi Electric’s world-renowned 3 Level Insulated Gate Bipolar Transistor (IGBT) technology for enhanced UPS performance and reliability; available in 80, 100, 150, 160, and 225 kVA and is UL924 listed (Standard for Emergency Lighting). One of the outstanding features of the AEGIS is that it boasts a relatively flat efficiency curve indicating that the UPS is highly efficient regardless of the load. This is significant since loads in various data centers can range anywhere from 25% to nearly 100%. The AEGIS can be configured both as a single module or in multi-module systems up to 4 units. Voltage option: 480V input, 480V output 3 phase 3 wire plus ground.