... Bypass breaker; DC Fuse, Fan, redundant power supply; temperature sensor, EPO (Emergency Power Off), audible alarmsSoftware ProtectionsDischarging batteries, Battery ... power supply fail, 13.5 v power supply fail, inverter overvoltage, 200% overload on each line, transfer fail, inverter voltage out ... .DimensionDimension520X1600X550 mmWeight (without batteries)230KG uninterrupted power supply ups