Siemens 6EP3447-7SB00-3AX0 SITOP PSU6200 48V/20A 3AC Stabilized Power Supply

The Siemens 6EP3447-7SB00-3AX0 is a SITOP PSU6200 stabilized power supply that converts 3-phase 400-500 V AC input into a controlled, isolated 48 V DC output rated at 20 A. It delivers 960 W and reaches 96.6% efficiency, with a minimum 18 ms mains buffering time at 400 V input and a diagnostic interface for status monitoring.

Technical Specifications

Certifications & Standards

• CE
• UKCA
• EAC
• RCM
• SEMI F47
• CB
• ABS
• DNV
• EPD

Selection Notes

The 3-phase 400-500 V AC input suits installations already running 3-phase feeders, avoiding a separate single-phase drop for the control cabinet supply. The 18 ms buffering time at 400 V and the 150% overload capability for up to 5 s/min let this unit ride through short mains dips without tripping downstream 24 V or 48 V loads. Two units can be paralleled via DIP switch for increased power or redundancy, and the output voltage is field-adjustable from 48 to 56 V through the potentiometer to match specific load requirements.