This dv/dt filter is an option for variable speed drives of Altivar Process ATV600 / ATV900 range.Its rated current is equal to 25A.It is used as an output filter (between drive output and motor) and enables your variable speed drive to run with motor cables longer than the maximum permitted lengths.Its protection index is IP20.It weighs 12kg.It is used to limit overvoltages at the motor terminals, filter interference and reduce motor earth leakage current.