Siemens sinamics g120c 3 phase frequency inverter siemens 6sl3210 1ke12 3ab0 the siemens 6sl3210 1ke12 3ab0 is a compact inverter from the sinamics g120c range it has been especially designed for machine manufacturers who are looking for an economic space saving and easy to operate frequency converter providing a multitude of functions the inverter is ideal for oems who require a cost effective space saving inverter that is simple to operate and has a broad range of functions typical app