MICROMASTER 4 Output LC filter 380-480V 3AC 4.5/4.1 A (40/50 °C) Base FSA 334x 75.5x 110 (HxWxD) Electrical filter SINAMICS sinewave filter for the G120C compact converter. Sinewave filters limit both the rate of change of the voltage (dv/dt) and the peak voltages across the motor winding. The sinewave filters also increase the maximum permissible motor cable length. The sinewave filter is available as an option in frame size FSAA in a power range between 0.55 kW and 1.5 kW. SINAMICS – the integrated drive family for every field of application.