SINAMICS additional line filter class B for Power Module FSB, can be installed under the chassis 3AC 380-480V 10.2A 296x 153x 50mm HxWxD Electrical filter SINAMICS line filter class B for the modular frequency converter SINAMICS G120. 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. It can also be installed under the chassis for frame sizes FSA to FSC. SINAMICS - simply my drive.