SITOP PSU4200 1AC 24 V20 regulated power supply PSU4200. Input: AC 120-240, Output: DC 24 V20. 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 design, the power supplies require minimal space on the DIN rail, and their good efficiency results in low heat loss in the control cabinet. To further increase the availability of 24V, the SITOP PSU4200 power supplies can be combined with buffer, redundancy, and selectivity modules. No matter the industry or requirement, Siemens provides reliable and efficient power supplies for every system.