Siemens 4AM4842-5FT10-0FA0 Industrial Transformer

Siemens 4AM4842-5FT10-0FA0 SITAS is a 1‑phase isolation transformer rated at 500 VA (0.5 kVA) with a 230 V secondary, designed for galvanic isolation in control circuits within industrial automation. It offers a multi‑tap primary for 525 V, 500 V, or 475 V inputs and a fixed 230 V output capable of delivering about 2.17 A at 50–60 Hz. The unit supports a short‑term vector power of 2000 VA, a relative short‑circuit voltage uk of 3.8%, and an efficiency of approximately 91% at rated load. Built to EN 61558‑2‑1, -2‑2, -2‑4, it is UL/CSA recognized and CE marked, with an ambient temperature rating of 40 °C and insulation class B, IP00 protection. Terminal connections are screw or tab, with installation by screws, and the enclosure measures 122 mm wide × 121 mm high × 134 mm deep. It is configured as a SITAS control/isolation transformer (SIDAC brand) with vector group II0/0 and no shielding windings, making it suitable for powering low‑voltage control circuits from higher mains while maintaining galvanic separation.