Product Description:

The HNF05.1E-500N-R0600-N-A5-NNNN is a three-phase mains filter manufactured by Bosch Rexroth Indramat. Installed between regenerative drive inverters and the plant power bus, it attenuates conducted high-frequency emissions and returns braking energy to the grid without exceeding harmonic limits. By matching the impedance of regenerative converters, the unit helps protect upstream switchgear and supports compliance with EMC requirements in industrial automation lines. It is often used in retrofit projects where high regenerative energy levels can place added stress on upstream fuses and capacitors.

The enclosure is rated IP00, so the filter must be mounted inside a cabinet that provides protection against accidental contact and airborne contamination. A leakage capacitance of 500 nF affects the displacement current that flows to protective earth and helps determine ground-fault monitor settings. The allowable input range is 3 × AC 380 V -15% to 690 V +10%, which covers common low-voltage three-phase networks used in industrial plants. Its continuous line current capability is 600 A, making it suitable for high-power multi-axis drive groups. Because the circuit is built for 3 phases, it distributes line loading evenly and helps minimize neutral current issues.

Version 1 uses the mechanical footprint and thermal routing assigned to series 05, which allows placement beside active line chokes in matched cabinet layouts. The filter is intended for regenerative devices only, so its internal damping network is not suitable for passive rectifier loads. A voltage tolerance of -15% / +10% also applies to auxiliary circuits, which helps connected relays remain within their rated operating range during line sag or swell. This operating range supports stable behavior when supply conditions move toward the limits permitted for the mains connection.