Product Description:

The HNL01.1E-0038-N0540-N-690-NNNN mains choke is produced by Bosch Rexroth Indramat for the HNL Mains Chokes series. Installed between the three-phase utility feed and drive inverters, this passive inductor raises input impedance so that switching spikes are damped and line-side harmonic currents are reduced. The added inductance helps smooth current drawn by rectifier sections, which lowers stress on upstream protective devices and reduces the sharp peaks that can appear on the supply. This type of line reactor is commonly used where multiple converters share one cabinet supply and stable incoming power is important for continuous operation.

The unit carries a protection rating of IP00, so its windings and terminals are open and require placement inside a guarded enclosure. The product is listed as Design version 1, which indicates the initial housing layout for this model and keeps the mechanical form straightforward. It supports a mains span of 3 x AC 380 V -15% … 3 x AC 690 V +10%, allowing one part number to serve networks operating at 50 Hz or 60 Hz. The coding Series 01 ties the choke to current IndraDrive accessories, and the supply classification Feeding shows that the inductor is installed on the incoming line rather than in the DC link. In that position, it reduces disturbance before power reaches the converter input and helps limit line-side current distortion during normal drive loading.

Within this product class, the choke uses a laminated core stack and copper winding sized for continuous line-conditioning duty across the stated voltage range. The ordering code fixes the terminal orientation and insulation materials for this version, so the physical arrangement remains consistent for this part number. Because the device is mounted on the supply side, enclosure design should provide safe clearance around live parts while still allowing heat to dissipate during operation. Adequate spacing around the coil body also helps preserve cooling airflow and insulation life when nearby drives add heat inside the cabinet.