Siemens 6ES7461-1BA00-0AA0 Power Supply Module — Legacy Replacement. Siemens 6ES7461-1BA00-0AA0 is the exact manufacturer order number for a power supply module in the SIMATIC S7-400 portfolio. Siemens describes this exact reference as: SIMATIC S7-400, IM461-1 RECEIVER INTERFACE MODULE FOR CENTRALIZED CONNECTION WITH PS TRANSMISSION, W/O K BUS. The verified manufacturer lifecycle record is PM500:Discontinued Product or end of PLM & Support.