Siemens 6EP4136-3AB00-0AY0 SITOP UPS1600 24 V DC/20 A. SITOP UPS1600 20 A uninterruptible power supply input: 24 V DC output: 24 V DC/20 A. It belongs to SITOP UPS1600 DC UPS modules. Recorded manufacturer technical characteristics include Efficiency: typical 98.2 %; Input voltage: 24 V DC; Output voltage: 24 V DC; Protection class: IP20; Input voltage range: 22 ... 29 V DC; Short-circuit proof: Yes; Rated output current: 20 A; Active power supplied: typical 480 W.