Product Description:

The HNL01.1E-1000-N0020-A-500-NNNN is a mains choke engineered by Bosch Rexroth Indramat within the HNL Mains Chokes series. Installed between the three-phase supply and a servo drive or inverter, the choke adds inductance that smooths the input current, lowers harmonic distortion, and limits inrush when large drive systems start. By tempering the line current, it protects upstream circuit breakers and helps the connected power electronics comply with network quality requirements in industrial automation panels. This function is useful in cabinets that power large rectifier front ends or multiple axes from one supply connection.

This choke carries a protection rating of IP10, which means the enclosure helps prevent accidental contact with live parts while remaining open enough for heat dissipation. It is designed for grids rated at 3 × AC 380–500 V -15/+10% and operates on standard utility frequencies of 50/60 Hz, so the voltage drop remains within the intended operating window. The unit is Design Version 1. The supply system is specified as Feeding, so the choke is intended for line-side installation ahead of the converter rather than on the motor side. In that position, it helps reduce ripple on the supply line and suppress noise returning to the source.

Within the HNL Mains Choke family, this unit belongs to series code 01, which places it in the first series grouping for this product line. It is intended for input current smoothing ahead of a converter, where the added inductance helps reduce current peaks seen by the rectifier and the upstream supply. This helps keep the supply current more stable during changing load conditions. The unit is designed for cabinet installation, so free air can move around the winding and support heat dissipation during continuous operation. It also suits drive panels where multiple converters share the same incoming power connection.