AUR1339 series UPS is a three-phase in and three-phase out high frequency UPS with medium power capacity. It can be operating in three-phase in and single-phase out & single-phase in and single-phase out configurations. This UPS is equipped with three-level inverter topology, it results in high efficiency. With higher power density, smaller footprint, it takes the leading position in the UPS industry with same power capacity; Adopting unique power unit redundancy design technology, decrease the abnormity risk of system after single-point failure, greatly increase the system reliability. For user, it is your best choice with high investment rate.