The BOSCH HNF01.1A-F240-E0051-A-480-NNNN is a discontinued mains power line filter designed for industrial applications, featuring single-phase 400-480 VAC operation at 50/60 Hz with 51A current rating. This 6-axis compatible filter supports cable lengths up to 240 meters for feeding units. (R911307937) Replacement model: HNF01.2D-F240-E0051-A-480-NNNN (R911337618).