Siemens 3RX9501-0BA00 AS-i Power 3A 120 V/230 V AC AS-Interface power supply unit, IP20. Siemens 3RX9501-0BA00 Power Supply - AS-i Power 3A 120 V/230 V AC AS-Interface power supply unit, IP20 IN: 120 V / 230 V AC OUT: AS-i, 3 A (30 V DC), IP20 with integrated ground fault detection, with integrated overload detection with AS-i data decoupling. Output voltage: 30 V DC, Rated current: 3 A.