Product Description:

The HNL05.1R-0054-N0352-N-A5-NNNN is a mains choke from Bosch Rexroth Indramat in the HNL Mains Chokes series. This passive line component connects between the plant supply and the power section of regenerative converters to smooth current flow and reduce electrical noise inside automation cabinets. By adding inductive impedance, it helps protect drive electronics from steep voltage transients and supports cleaner current draw at the grid connection. It is typically used ahead of regenerative power sections where line quality and converter protection need to be improved without active switching elements.

The choke is rated for a continuous line current of 352 A, allowing it to support medium-power multi-axis systems without magnetic saturation. Its nominal inductance is 54 µH, which helps limit harmonic content and moderates voltage drop at rated load. The construction is intended for a 3-phase network and is suited for converters that return energy to the mains through a regenerative supply system. A protection classification of IP00 means the windings are exposed and the unit must be installed inside an enclosed control cabinet for safe operation. The assembly measures 326 × 281 × 214 mm, which helps with cabinet layout and mounting clearance.

With a mass of 35 kg, the unit requires secure mounting rails or a rigid baseplate to prevent movement during high-current operation. It has a thermal power loss of 350 W, and cooling is handled by natural convection because water dissipation is 0 W. Open installation space around the choke helps heat leave the winding surfaces during continuous duty. The choke is intended for a Regenerative supply topology, so returned motor energy can be fed back to the grid instead of being absorbed by braking resistors. The product is version 1, and it is supplied without additional fitted options.