Product Description:

The HNF05.1A-500N-R1000-N-A5-NNNN is a three-phase mains filter produced by Bosch Rexroth Indramat within the HNF Mains Filters series. As a Series 05 device, it is installed between the facility supply and regenerative drive controllers to attenuate line-borne interference and return surplus energy safely to the grid. By reducing conducted emissions, the filter supports stable operation in high-power automation cells that rely on common DC-bus inverters. This placement also helps protect the upstream power network from switching noise generated by connected drive equipment.

The filter has a continuous current limit of 1000 A, allowing it to serve several inverters without saturating its inductive stage. Its electromagnetic emission classification is C3 in accordance with DIN EN 61800-3, so it is intended for industrial networks fed by dedicated transformers. Differential and common-mode noise is diverted through an internal leakage capacitance of 500 nF, which provides a low-impedance path for high-frequency components while keeping displacement current controlled. Thermal behavior includes a power loss of 166 W at rated load, so cabinet ventilation must remove this heat to protect adjacent equipment. The open-frame construction carries a degree of protection of IP00, which means the unit requires installation inside a suitable enclosure to prevent accidental contact.

The operating window spans 380–690 V mains, and performance remains stable when the network varies by -15%/+10%. Its input architecture accepts a supply arranged as 3 x AC and is intended for regenerative devices only, which helps prevent returned energy from overstressing the DC link. Design Version 1 keeps the electrical layout consistent across this product range. The unit has a mass of 42 kg, so the mounting structure and conductor selection must suit the current load and support safe installation. Proper integration also helps maintain controlled attenuation in the connected drive system.