A 3-phase DIN rail power supply purpose-built for charging 12V lead-acid batteries in industrial control applications, the SITOP PSU3800 6EP3424-8UB00-0AY0 combines a battery-optimized U-I output characteristic with efficient 3-phase input in a 70mm-wide housing.

Battery-Optimized Charging Characteristic

The output follows a U-I curve specifically designed for lead-acid battery charging: constant-current mode during bulk charge transitions smoothly to constant-voltage float charging once the battery reaches target voltage. A DIP switch selects between this battery-charging characteristic and standard constant-voltage mode for direct load supply.

3-Phase Input for Balanced Loading

Drawing from a 400–500V AC 3-phase supply distributes the input current evenly across all three phases, avoiding the neutral overloading risk that can occur with multiple single-phase PSUs on the same panel. The wide 320–575V range tolerates voltage fluctuations common in industrial facilities.

Compact 70mm Design

At just 70mm wide, this 240W unit fits into densely populated control cabinets without consuming excessive DIN rail space. Natural convection cooling means no fan maintenance and silent operation.