Product Description:

The HNL01.1E-0106-N0235-A-500-NNNN is a three-phase mains choke manufactured by Bosch Rexroth Indramat for use in drive power systems. Installed between the plant supply and the converter input, it reduces line current distortion and helps limit voltage spikes that can stress connected equipment. The unit is classified as an HNL Mains Choke, which identifies it as a dedicated supply inductor rather than an active control device. By adding inductance ahead of the drive, it moderates steep current changes from rectifier front ends and helps reduce stress on upstream fuses and contactors. This arrangement supports cleaner line conditions for variable-speed drives and associated power components.

The enclosure has an IP10 protection rating, so it must be mounted inside a closed cabinet where larger objects cannot contact live parts. Rated input is 3 × AC 380–500 V −15 /+10 %, 50/60 Hz, allowing the choke to operate across common industrial mains ranges without retapping. That range supports use on many industrial three-phase supply networks found in automation cabinets and converter assemblies. Production batch 01 identifies the material and fastening arrangement used for this first-series build. The choke is intended for a Feeding supply system, which places it on the line side of the drive rather than in a regenerated-energy path.

The product is listed as Design Version 1, indicating the first design revision for this part number. Heat is removed by natural convection, so the choke operates without fans or active airflow devices. Because it relies on a wound iron-core design, the unit performs its line-reactance function without electronic control stages or switched semiconductors. This makes it suitable for enclosed electrical panels where passive input filtering is used ahead of the drive.