Siemens 6ES7461-3AA00-0AA0 Interface Module — Legacy Replacement. Siemens 6ES7461-3AA00-0AA0 is the exact manufacturer order number for a interface module in the SIMATIC S7-400 portfolio. Siemens describes this exact reference as: SIMATIC S7-400, IM461-3 RECEIVER INTERFACE MODULE DISTRIBUTED CONNECTION UP TO 102 M, WITH K BUS. The verified manufacturer lifecycle record is PM500:Discontinued Product or end of PLM & Support.