Siemens 6GK1900-0ML00-0AA0 Automation Connection Component. Siemens 6GK1900-0ML00-0AA0 is the exact manufacturer order number for a automation connection component in the SIMATIC NET PC Communication portfolio. Siemens describes this exact reference as: Termination kit SC RJ POF plug, Assembly case for on-site assembly of SC RJ connectors consisting of stripping tool, Kevlar scissors, polishing set. The verified manufacturer lifecycle record is PM300: Active Product.