SINAMICS additional line filter class B for Power Module FSC, can be installed under the base 3AC 380-480V 39.4A 362x 190x 55mm HxWxD Electrical filter SINAMICS line filter, class B for the Power Module PM250 of the modular frequency converter SINAMICS G120. With one of the additional line filters, the Power Module achieves a higher radio interference class. The FSC frame sizes of the Power Module PM250 are only available with an integrated class A line filter. To achieve class B according to EN 55011, the Power Module PM250 must also be equipped with a class B base filter. The line filter is available in a three-phase line voltage between 380 V and 480 V in the FSC frame size. SINAMICS - simply my drive.