SINAMICS Additional line filter Cl. B for Power Module FSB base mounting possible 380-480V 3AC 10.2A 296x 153x 50 mm HxWxD 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.