Siemens 3RX9501-0BA00 AS-Interface Power Supply

The Siemens 3RX9501-0BA00 AS-Interface Power Supply is a dedicated AS‑Interface power source that delivers 3 A at 30 V DC to AS‑I devices on the bus. It accepts selectable 120 V or 230 V AC input (50/60 Hz) via a built‑in changeover switch and is rated IP20, with a compact enclosure around 125 x 50 x 125 mm. The unit provides AS‑I DC output at 30 V and 3 A and includes integrated ground fault detection and overload detection, plus remote indication and remote reset, and AS‑I data decoupling to keep power and data separate on the bus. For safe installation, the recommended main supply protection is a 6 A circuit breaker (IEC 898, characteristic C). The device is designed to power AS‑Interface networks, ensuring reliable power delivery to AS‑I masters and slaves while maintaining data integrity on the bus.