Product Description:

The HNF01.1A-P2K0-R1200-A-480-NNIT is a three-phase mains filter that belongs to the HNF Mains Filters series from Bosch Rexroth Indramat. It is installed between the utility supply and regenerative servo drives to limit high-frequency interference. It also returns energy safely to the line during braking events in industrial automation systems. Its position on the incoming power path helps reduce noise from connected drive equipment before that interference reaches the broader electrical system.

This filter is housed in an IP20 enclosure, so fingers and tools are guarded but the unit must be mounted inside a cabinet. The input accepts 400–480 V AC three-phase power, allowing connection to common European and North American factory networks, while the ±15%/+10% tolerance accommodates moderate supply fluctuations. Line frequency compatibility of 50/60 Hz means the same part can be used on different industrial grids without special frequency adaptation. Electromagnetic emission limits are classified as C3, and under DIN EN 61800-3 this class is intended for industrial environments with dedicated transformer feeds rather than public low-voltage systems. That makes the unit suitable for machine installations where regenerative drives and switching components can place higher noise levels on the supply. The filter is used to reduce conducted noise in equipment rooms and machine halls.

The filter is design version 1 and uses platform code 01. The supply path is marked for regenerative devices only, so the choke, capacitors, and bleed circuitry are sized to handle reverse power flow from drive inverters during deceleration cycles. Installed upstream of additional motor-side chokes, it works as part of the overall line-conditioning network in regenerative drive cabinets. The term EMC Category describes how the impedance network works with shielded cabling and cabinet bonding to keep differential-mode currents within the enclosure ground plane instead of letting them propagate onto the facility bus.