Siemens 4AM6542-8ED40-0FA0 SITAS Transformer Unit

Siemens SITAS 4AM6542-8ED40-0FA0 is a single‑phase SITAS transformer intended for industrial control and safety isolation, offering a 2.5 kVA nominal rating with a higher S6 loading of 13.3 kVA and designed for use in electrical panels and equipment where robust isolation and auxiliary power are required. The device accepts a wide range of primary voltages (Upri) across standard industrial supplies—600, 575, 550, 525, 500, 480, 460, 440, 415, 400, 240, and 230 V—and provides secondary outputs of two 115 V windings (Usec), enabling flexible wiring for motor controls or logic circuits. Rated secondary current is 10.9–21.8 A, the unit runs at 50/60 Hz, and it features a II0 vector group with no phase shift and insulation class 40/B, along with an IP00 enclosure; terminals are screw/flat‑type connections and mounting is via screws. The transformer carries UL/CSA recognition and complies with EN 61558-2-1, -2-2, -2-4, reinforcing its suitability as a dedicated control transformer or isolation transformer within Siemens SITAS installations.