Siemens 6EP3233-0TA10-0AY0 SITOP PSU3400 24 V/3.5 A Stabilized power supply. SITOP PSU3400 24 V/3.5 A Stabilized power supply Input: 48 V DC (28…60 V) Output: 24 V DC/3.5 A NEC CLASS2. It belongs to SITOP PSU3400. Recorded manufacturer technical characteristics include Efficiency: 90 %; IP protection: IP20; Input voltage: 48 V DC (28-60 V); Buffering time: 5 ms; Output current: 3.5 A; Output voltage: 24 V DC; Galvanic isolation: Yes; Short-circuit proof: Yes.