Product Description:

The HNL01.1R-0090-N0650-A-480-NNNN is a three-phase mains choke produced by Bosch Rexroth Indramat and assigned to the HNL Mains Chokes series. In regenerative drive systems, the component is wired in series with the power line to increase network inductance. This reduces high-frequency harmonics and limits inrush current when the inverter returns power to the utility. It is installed on the line side of the drive, so its effect is focused on the incoming supply rather than the motor output. By smoothing the current waveform, it also helps reduce stress on upstream fuses and contactors.

Within the product family, the choke is built to design version 1. It connects to a utility rated at 3 x AC 400-480 V and supports a -15% to +10% tolerance without derating, so the same unit can operate on weaker or higher-voltage grids. Line frequency compatibility spans 50/60 Hz, and its circuit category is Regenerative, so the magnetic core can carry power flow in both directions without saturation during braking. The metallic enclosure has a protection rating of IP10, which provides basic finger-safe shielding while leaving airflow available for heat dissipation.

This unit belongs to series code 01 within the wider product line. That code keeps the physical layout and connection arrangement consistent for products in the same range, which helps maintain predictable mounting space and terminal orientation inside an electrical cabinet. The choke is installed on the AC input side of a regenerative converter, where added inductance supports cleaner current draw and steadier interaction with the supply network. This placement also keeps the line reactor separate from the switching waveform seen at the motor terminals. Its role is passive, but it directly influences how line current rises and how the connected drive behaves during power exchange with the mains.