Product Description:

The HNL01.1R-0300-C0180-A-480-NNN1 mains choke is produced by Bosch Rexroth Indramat as a component of the HNL Mains Chokes series. In a converter installation, a mains choke is placed between the grid and the drive to reduce harmonic content, limit inrush current, and maintain acceptable network impedance. This passive component therefore protects connected inverters, improves current quality, and supports stable energy feedback from servo drives during dynamic braking events in industrial automation systems.

The device is engineered for a 3 x AC supply, indicating operation on a balanced three-phase network; its permissible voltage span of 400–480 V covers the most common plant distribution levels. A tolerance of -15/+10% on that range allows continued service during moderate mains fluctuations. Nominal line frequency compatibility extends across 50/60 Hz, so the same choke can be specified for installations worldwide. The enclosure carries an IP10 degree of protection, which shields the windings from accidental contact while remaining ventilated for thermal dissipation. Integrated filtering elements are supplied with capacitors, so reactive power compensation is provided without adding separate modules, simplifying panel layout and wiring.

Because the supply system is Regenerative, the choke must safely handle bidirectional energy flow while limiting voltage spikes on the common DC link. The unit is Design Version 1. It is part of Series 01 in this product family. Its inductance helps smooth line current as converter demand changes, and that supports stable operation during acceleration, deceleration, and power feedback to the supply. This behavior reduces stress on upstream distribution components when the connected drive changes load rapidly.