Product Description:

The HNF01.1A-M900-R0094-A-480-NNNN is a three-phase mains filter placed on the supply side of multi-axis drive systems. Built by Bosch Rexroth Indramat for the HNF Mains Filters series, the unit suppresses high-frequency leakage currents and returns regenerated energy to the utility without exceeding class-specific limits. In this role, it sits between the incoming mains connection and the connected drives, helping the installation manage conducted emissions before they reach the plant network. It is intended for cabinet integration in industrial automation lines where several inverter axes share a common feeder and where network distortion must remain below limits set for heavy industrial environments.

The filter carries a continuous load capability of 94 A, allowing it to feed large regenerative drive groups without thermal derating. It connects to utility grids rated at 3 × AC 400–480 V with a -15% to +10% tolerance at 50 or 60 Hz, so it can be installed in worldwide low-voltage plants. Electromagnetic compatibility is classified as C3 in accordance with DIN EN 61800-3, and the open housing is protected to IP20 for touch-safe mounting inside an enclosed switchgear cabinet. The enclosure is intended for protected indoor installation rather than direct exposure on open machinery. Because the filter is intended for regenerative devices only, its impedance and thermal layout suit the bidirectional power flow that occurs when servo drives brake and feed energy back to the mains.

With support for 15 axes and a maximum cable length of 900 m, the component can be used in extended machine layouts without exceeding its attenuation curve. That coverage suits long production cells in which motors and cabinets are distributed across a broad machine footprint. The unit is identified as Design Version 1 and Series 01. These codes place it in the first design release of this filter line and keep it aligned with the current HNF accessory range. Its form factor is intended for enclosed cabinets that distribute power to multiple drive axes from a shared incoming line.