Siemens 6ES7392-1AJ00-1AB0 Automation Connection Component — Legacy Replacement. Siemens 6ES7392-1AJ00-1AB0 is the exact manufacturer order number for a automation connection component in the SIMATIC S7-300 portfolio. Siemens describes this exact reference as: SIMATIC S7-300, Front connector for signal modules with screw contacts, 20-pole, 100 units per packing unit. The verified manufacturer lifecycle record is PM400:Announcement of product phase-out.