Siemens 6ES7390-5AA00-0AA0 Automation Connection Component — Legacy Replacement. Siemens 6ES7390-5AA00-0AA0 is the exact manufacturer order number for a automation connection component in the SIMATIC S7-300 portfolio. Siemens describes this exact reference as: SIMATIC S7, Shield support element 80 mm wide, with 2 rows for 4 shield terminals each. The verified manufacturer lifecycle record is PM400:Announcement of product phase-out.