Product Description:

The HNL01.1R-0590-C0065-A-480-NNNN is a three-phase mains choke produced by Bosch Rexroth Indramat for the HNL series of line reactors. Positioned between the utility supply and a frequency converter, a mains choke dampens line disturbances, limits inrush current, and lowers harmonic content in automation panels. This unit serves drive systems that feed surplus braking energy back to the power grid, and it performs that task without active electronics, allowing straightforward installation inside ventilated control enclosures. It helps smooth the line side of the drive system before power reaches the converter, which reduces electrical stress on upstream supply components. By attenuating differential and common-mode noise, it also helps equipment comply with electromagnetic compatibility limits.

It is specified for grids delivering 3 × AC 400–480 V, -15/+10%, 50/60 Hz, so the inductance value matches standard low-voltage industrial feeders. The supply path is regenerative, allowing connected inverters to return energy while keeping current distortion within limits. The internal terminations are reinforced with capacitors that further damp high-frequency switching edges. The assembly carries an IP10 rating, and this open-finger-safe degree of protection is intended for cabinet mounting where no falling liquids are present. The unit is Version 1.

Within the product hierarchy, the choke is filed under Series 01. The product series is HNL Mains Choke, grouping it with line reactors that share similar inductance classes and thermal behavior. This alignment keeps installation clearances, terminal positions, and harmonic behavior consistent across regenerative drive applications in the same product group. It is intended for control cabinets where passive line conditioning is required ahead of the connected frequency converter.