Siemens 6AG1961-3BA21-4AX0 SIPLUS PS E202U redundancy module for medial exposure with conformal coating. Siemens 6AG1961-3BA21-4AX0 Power Supply Accessory - SIPLUS PS E202U redundancy module based on 6EP1961-3BA21 with conformal coating, 0…+60 °C, input/output: 24 V DC/40 A suitable for decoupling two SITOP power supplies with max. 20 A output current each. Output: 24 V DC/40 A suitable for decoupling two SITOP power supplies with max.