SINAMICS Line filter class B for Power Module FSF 380V-480V 3AC 204A Electrical filter SINAMICS Class B line filter for modular SINAMICS G120 inverters. With one of the additional line filters, the Power Module achieves a higher radio interference class. The line filter is available for frame sizes FSA to FSF. Further, for frame sizes FSA to FSC it can be used as footprint component. SINAMICS - simply my drive!