The Siemens 6EP3322-6SB00-0AY0 is a SITOP PSU8200 DC power supply delivering a rated output current of 4.5 A from a DC input range of 110 to 300 V.
The 4.5 A rated output holds across the full input range up to +55 °C ambient; above that, derate at 2%/K up to +70 °C. That derating curve is the spec that governs real panel loading — if the enclosure runs warm, the available current drops, so size the load budget accordingly. Input accepts 110 to 300 VDC, covering nominal 110 V, 125 V, and 220 V DC bus voltages common in industrial and traction applications. Safety extra-low output voltage (SELV) per EN 60950-1 and EN 50178 means the output is touch-safe and suitable for powering PLCs, sensors, and other control electronics without additional isolation barriers.
Carries CE, cULus-Listed (UL 508, CSA C22.2 No. 107.1), cURus-Recognized (UL 60950, CSA C22.2 No. 60950), and EAC approvals. The cULus listing includes NEC Class 2 per UL 1310, which simplifies wiring in control panels by allowing smaller-gauge conductors and reduced enclosure spacing. DNV GL marine type approval is also on file. Lifecycle status is current — this is an active catalog item, not a phase-out or NRND line.
Clearance requirements: 20 mm above and below the unit for convection cooling, zero clearance on the sides. Recommended upstream protection: a 10 A B-curve or 6 A C-curve miniature circuit breaker.