Siemens 6EP1536-3AA00 SITOP PSU400M 600V DC 24V/20A DIN Rail DC/DC Converter

The Siemens 6EP1536-3AA00 is a SITOP PSU400M DC/DC converter that steps a 300-900 V DC bus (600 V nominal) down to a stabilized 24 V DC output rated 20 A (480 W). It mounts on a 90 mm-wide DIN rail, uses a soft-start with no output overshoot on switch-on, and holds 95% efficiency at rated load.

Technical Specifications

Certifications & Standards

• CE
• UKCA
• EAC
• RCM
• CB
• Shipbuilding
• DNV
• EPD

Selection Notes

Unlike the AC-input SITOP power supplies, the 6EP1536-3AA00 takes a 300-900 V DC bus directly, so it fits behind a rectified or battery-backed DC distribution system rather than a mains feed - the 600 V nominal rating covers common DC traction and telecom bus voltages. Soft-start eliminates output overshoot on power-up, and the response delay is switch-selectable between 0.1 s and 10 s, letting the startup sequence be timed against downstream equipment. Short-circuit behavior is switchable between a constant-current characteristic around 22 A and a latching shutdown, so the fault response can be matched to whether the load needs to recover automatically or be reset manually.