This single-phase power supply from Siemens provides a stable voltage, frequency and current to your industrial machinery. Load regulation of 1% and line regulation of 0.1% ensure a stable supply, even if there are fluctuations in the input. If you work in a hazardous area where combustible gases or dust are present, this device is a safe choice. Siemens sitop 10a/24vdc, with 110/230v input.