Product Description:

The Bosch Rexroth Indramat NFD02.1-480-055 is a passive mains filter from the NFD Mains Filters series. Installed between the three-phase supply and a drive controller, the unit attenuates conducted interference and limits high-frequency return currents that would otherwise travel through plant wiring. By providing a controlled impedance path, the filter helps automation equipment meet electromagnetic compatibility requirements across a broad industrial operating range.

The enclosure is rated at IP10, so it provides only basic protection against accidental contact and is intended for use inside a closed cabinet. Its maximum line voltage is AC 480 V (+10%), which suits common 400 V to 480 V distribution networks. Continuous operation is permitted at a rated line current of 55 A, and short overloads up to 1.5 × In for 1 min/h can be tolerated without damage. Internal core and resistor losses amount to 20 W, so that heat must be removed by natural convection or by the cabinet's forced-air system. The filter supports three-phase operation, and its insertion loss remains stable from -25 °C up to a maximum ambient temperature of +85 °C, which allows use in both cold storage areas and high-temperature enclosures.

High-potential tests verify insulation integrity: the phase-to-phase path withstands 2125 VDC for 2 s, while the phase-to-protective-earth path endures 2800 VDC for 2 s. Supply conductors are clamped to an AWG 6 terminal block that accepts 10 mm² finely stranded or solid copper conductors. Power wiring leaves through three terminals because the filter is intended for a three-phase network. When mounted on a vertical rail, its mass of 3.1 kg places only a modest static load on the support structure. The unit can be installed alongside drive equipment that generates differential or common-mode noise, provided cabinet spacing and airflow are maintained.