SITOP PSU4200 3AC 24 V10 regulated power supply PSU4200 Input: AC 400-500 Output: DC 24 V10. The 3-phase power supplies SITOP PSU4200 are designed for basic requirements in industrial environments and offer all essential functions at an affordable price. The wide-range input allows connection to various 3-phase power grids. Due to their narrow design, the power supplies require minimal space on the DIN rail, and their high efficiency generates little waste heat in the control cabinet. To further increase the availability of 24 V, the SITOP PSU4200 power supplies can be combined with buffer, redundancy, and selectivity modules. Regardless of the industry or requirement, Siemens provides reliable and efficient power supplies for every system.