Siemens 4AT3912-8DD40-0FA0

This transformer operates with a single phase and is rated at 8/28.5 kVA. It supports a primary voltage range of 550V down to 208V with a secondary output of two 115V connections. The secondary current is rated at 34.78-69.56A. Operating at frequencies of 50 to 60 Hz, it features a vector group and shield winding classification of II0/0.

With an insulation class of H according to IEC 85, this unit has a relative short-circuit voltage of 3.2%. The dimensions of the transformer are 174 mm in depth, 226 mm in width, and 370 mm in height. It has an IP00 protection rating and utilizes screw connections for terminal types, facilitating straightforward installation. Compliance with EN 61558-2-1, -2-2, -2-4 standards is established, along with UL/CSA recognition. Notably, it is not designed as a safety transformer or isolating transformer.