Product Description:

The HNF01.1A-N1K0-R0650-A-480-NNIT is a passive mains filter produced by Bosch Rexroth Indramat as part of the HNF Mains Filters series. Within an automation cabinet, the filter is wired between the utility mains and regenerative inverters, where its impedance network absorbs switching harmonics and smooths returning energy from braking actions. It is used on the line side of drive systems where repeated deceleration can push energy back toward the supply. By stabilizing line quality, the device protects upstream fuses, limits interference with neighboring loads, and helps connected servo or frequency converters meet plant-wide EMC objectives.

Mechanical integration is guided by its IP20 enclosure rating, which indicates touch-safe terminals but still requires installation inside a protected cabinet. The filter accepts a three-phase supply of 3 × AC 400–480 V with a tolerance window of −15% to +10%, allowing connection on feeders where voltage varies around nominal factory levels. Compatibility with worldwide grids is maintained through a base frequency of 50/60 Hz, so the same unit can be used on standard industrial power systems in different regions. Electromagnetic behavior is categorized as C3 according to DIN EN 61800-3, which suits industrial power networks separated from public low-voltage supplies by their own transformer. The hardware revision is 01, which marks this version of the filter assembly.

The filter is intended for regenerative devices only, so it is used with drive systems that return energy to the supply during deceleration. This application focus separates it from line components meant for non-regenerative input stages. The unit is Design Version 1, which states the documented version of the assembly. Its cabinet layout can be planned around placement on common busbars with neighboring converters.