SITOP PSU4200 1AC 24 V3 regulated power supply PSU4200 Input: AC 120-240 Output: DC 24 V3. The single-phase power supplies SITOP PSU4200 are designed for basic requirements in industrial environments and offer all essential functions at an affordable price. The input with automatic voltage range switching allows connection to various single-phase power networks. Due to their narrow width, the power supplies require minimal space on the DIN rail, and their high efficiency generates little waste heat in the control cabinet. To further enhance 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.