Product Description:

The HNL01.1R-0300-C0180-A-480-NNNN is a three-phase mains choke produced by Bosch Rexroth Indramat within the HNL Mains Chokes series. Installed between the utility supply and regenerative drive converters, the unit introduces controlled inductance that smooths current draw, reduces harmonic distortion, and eases stress on line components in industrial automation panels, especially where several converters share the same incoming feeder. By limiting di/dt and voltage transients, the choke protects upstream components and helps the regenerative power section meet functional safety and electromagnetic compatibility requirements during normal acceleration and braking events.

Its degree of protection is rated at IP10, meaning live parts are guarded against accidental contact by large tools, but the assembly still needs cabinet installation for additional environmental protection. The mains connection range is 3 x AC 400–480 V (-15/+10%), 50/60 Hz, which matches common plant power grids and tolerates moderate supply fluctuation without changing the intended operating window. A regenerative supply system classification indicates that the choke is sized to carry energy returned from drives during braking without saturation. Design Version 1 identifies the initial mechanical layout for mounting, wiring, and thermal paths used by this model.

Series index 01 groups this model with components that share the same footprint and inductive performance, which helps keep cabinet layouts consistent across multiple drive ratings. The additional option of with capacitors adds parallel damping that helps reduce high-frequency switching noise on the supply side. This arrangement supports predictable impedance, heat dissipation, and conductor routing in regenerative drive cabinets where returned energy can change line conditions quickly during deceleration. It is well suited to installations that need stable line-side behavior without adding unnecessary complexity to the incoming power path.