Siemens 6EP3133-0TA10-0AY0 SITOP PSU3400 24 V/4 A Stabilized power supply. SITOP PSU3400 24 V/4 A Stabilized power supply Input: DC 12 V (9...18 V) Output: DC 24 V/4 A. It belongs to SITOP PSU3400. Recorded manufacturer technical characteristics include Efficiency: approx. 89 %; Power loss: approx. 12 W; Input voltage: DC 12 V; Rated current: 4 A; Output voltage: DC 24 V; Current limitation: typ. 4.5 A; Input voltage range: 9-18 V DC; Output overvoltage protection: < 35 V.