Product Description:

The HNL02.1R-0980-N0023-A-480-NNNN is a passive line reactor produced by Bosch Rexroth Indramat for the HNL Mains Chokes series. Installed between the facility mains and regenerative inverters, the component adds inductive impedance that smooths current waveforms and reduces the rate of current change. In an automation cell, this helps limit harmonic injection into the plant network and helps protect power semiconductors from voltage transients that can occur during braking energy feedback. This is useful on axes that return energy to the supply during deceleration, where line-side current can change quickly.

Its enclosure carries an IP10 rating, so the windings remain open to free convection while still preventing accidental contact with large foreign objects. The unit is supplied in Design Version 1, which uses the current mounting footprint and terminal layout. The choke connects directly to three-phase grids rated at 3 x AC 400-480 V and tolerates supply variation of -15/+10% without saturation. Frequency compatibility spans 50/60 Hz, allowing use with either utility standard. Because the upstream drive operates in a Regenerative configuration, the inductance must handle bidirectional power flow during motoring and braking operation.

The unit is supplied without built-in surge arresters, fuses, or thermal switches, so those protective functions must be provided externally. It is intended for installations that already use separate protective components matched to the incoming line and the connected inverter. The reactor therefore remains focused on current smoothing and transient moderation rather than on integrated line protection. Its role is to add inductance at the power entrance while leaving switching, fuse coordination, and supplemental protection to the surrounding hardware.