Product Description:

The HNL01.2R-0590-C0065-A-480-NNNN is a three-phase mains choke engineered by Bosch Rexroth Indramat for the HNL Mains Chokes series. Installed ahead of regenerative power converters, it adds inductance to the supply line so high-frequency switching currents are smoothed and inrush peaks are limited before they reach the converter input stage. This helps reduce harmonic content on the incoming line, lowers stress on upstream circuit breakers, and supports electromagnetic compatibility in industrial automation equipment. Because it works on the line side of the system, it also helps keep current waveforms more stable during changing load conditions.

The enclosure is rated IP10, which provides basic protection against accidental contact while leaving the component open to convection cooling. The product is Version 2, indicating the second design revision used for this model. Its mains connection accepts 3 × AC 400–480 V -15/+10 %, 50/60 Hz, so it can be connected directly to common industrial power systems without a separate step-down stage. The choke is intended for a regenerative supply network, allowing it to handle bidirectional energy flow when connected drives return excess power to the grid. It is built with integrated capacitors, creating an L-C filter that further attenuates switching ripple and helps stabilize power factor at the converter input.

The unit belongs to Series 01, placing it within the established electromagnetic arrangement used for this range. Its fixed mechanical layout keeps the enclosure size, mounting points, and terminal orientation consistent within the product family, which makes panel planning more predictable. Terminal markings and product documentation follow the same format used across related drive components, so wiring information is presented in a familiar way. This arrangement is suited to regenerative bus links where differential and common-mode noise must be held to controlled levels on the supply side.