Product Description:

The HNL01.1R-0045-N1200-A-480-NNNN is a three-phase mains choke produced by Bosch Rexroth Indramat for the HNL Mains Chokes series. Installed between the utility supply and regenerative drive inverters, the device adds series inductance that helps limit peak inrush current and reduce harmonic content on the line. This supports cleaner input conditions for connected servo drives and helps stabilize power delivery in industrial automation cells. The choke is installed on the AC input side, where it conditions incoming power before it reaches the inverter section. That input-side filtering is useful in systems where several axes share the same plant supply.

This choke has an enclosure rating of IP10, which protects against accidental finger contact with live parts while leaving ventilation openings available for cooling. It is supplied as design iteration 1, so the unit follows the first mechanical release for this model. The winding is sized for a mains connection range of 3 × AC 400–480 V -15/+10%, allowing normal line variation without pushing the core into saturation. At 50/60 Hz, the choke presents predictable impedance that reduces higher-order harmonics from pulse-width-modulated inverters. It is intended for use with a regenerative supply system, so returned braking energy can flow back to the grid while current spikes are moderated during reversal.

The unit uses series code 01, which places it in the standard release for this choke group. Its fixed configuration keeps the electrical and mechanical arrangement straightforward for cabinet layouts built around this model. Open ventilation supports heat dissipation, so the device should be mounted in a protected enclosure where dust, loose hardware, and direct contact with energized sections are controlled. Because the ventilation openings are not covered, spacing around adjacent wiring and metal surfaces should remain clear to avoid unnecessary heat buildup. Terminal access and overall placement should also allow clear airflow around the choke body during continuous operation.