Enjoy Uninterruptible Power Supply with the General UPS 10KVA Online 1 Phase. The Mercury online UPS series offers high frequency, double-conversion technology uninterruptible power supply systems that provide maximum power protection for mission-critical equipment. Such equipment require always-on power supply, with zero switching time, which only online power backup systems can provide. Moreover, they also need the purest quality of power, of pure sine wave. The Mercury online UPS provide that ideal power backup supply for critical, sensitive equipment, ensuring, too, that they are protected from power problems in the AC line.