4AU3912-8BC40-0HA0 SIEMENS

The 4AU3912-8BC40-0HA0 is a SITAS three-phase transformer designed for industrial applications requiring reliable voltage transformation and isolation. It features a primary voltage configuration of Y500-400/D289-230V and a secondary voltage configuration of Y 400 / D 230V, offering versatility in voltage adaptation. The transformer has a rated power of 12.5 kVA for continuous operation and 43.7 kVA for short-term operation (S6 duty cycle). Its secondary current ranges from 18 to 31.2A, accommodating various load demands. Operating at a frequency of 50...60 Hz, it is suitable for use in different electrical systems. The vector group is IIIIII0 /0, and it includes a shield winding for enhanced safety and reduced electromagnetic interference. With a thermal class of H and an ambient temperature rating of 55°C, it can withstand demanding operating conditions. The transformer is designed with IP00 protection and screw terminals for secure and easy installation, and it complies with EN 61558-2-1, -2-2, -2-4 standards and is UL/CSA-recognized as a control circuit and isolation transformer.