The R911373247 (HNF01.2D-F240-E0202-A-480-NNNN) is a Rexroth Indramat mains filter designed for industrial servo systems, engineered to minimize radio signal interference and limit leakage current in applications with AC connecting voltages from 400 to 480 V and a nominal current rating of 202 A. The filter is intended for use exclusively with feeding units and integrates into drive systems equipped with multiple position axes and extended motor cable lengths. Installation requires an isolated transformer positioned between the mains supply and the filter. The device is housed in a protective enclosure, supporting flexible installation while providing resistance to environmental contaminants and mechanical stress.