Dual mode low-pass sine-wave filter, suppressing the switching frequencyand smooth out the phase-to-phase and phase-to-ground motor voltages tobecome sinusoidal.Key-features:Up to 1000 meter unscreened motor cableReduction of acoustical switching noise from motorElimination of motor bearing currentsElimination of motor insulation stressExtends motor service lifetime.Specifications:Voltage rating: 380-500VNominal current:@400V: 46.0A, 5-150 Hz and 42.8A, <5 Hz@500V: 43.5A, 5-150 Hz and 33.5A, <5 HzAmbient temperature: -10 to 45 deg. CEnclosure degree: IP20Mounting: wall-mounted book style with drive