Siemens 4AM6542-8DD40-0FA0 Industrial Transformer

Siemens 4AM6542-8DD40-0FA0 is a SITAS single‑phase transformer intended for control circuits and isolation in industrial equipment. It is rated 2.5 kVA (Pn) with an S6 rating of 13.3 kVA; primary taps cover 550 to 208 V (including 550, 525, 500, 480, 460, 440, 415, 400, 380, 230, 208 V); secondary is two 115 V windings (Usec: 2×115 V) that can be connected in parallel for up to 21.8 A or in series for 230 V at about 10.9 A. It operates at 50–60 Hz, with a temperature rise of 40 C and insulation class B; the enclosure is IP00; terminals are screw/flat‑type and mounting is by screws. The transformer is UL/CSA‑recognized and is categorized as both a control transformer and an isolation transformer; the winding configuration is vector group II0 with shielding winding 0. This unit provides isolated, controllable power for industrial controls, relays, sensors, and automation equipment.