Product Description:

The NFD02.1-480-075 mains filter is produced by Bosch Rexroth Indramat within the NFD Mains Filters series. It is installed between the facility supply and drive controllers to attenuate conducted interference and to protect downstream equipment from high-frequency noise. By providing symmetrical and asymmetrical attenuation on all three phases, the module helps industrial automation panels comply with electromagnetic compatibility limits set for production machinery. It also helps reduce noise that could otherwise return to the supply network or affect nearby control components in the same enclosure.

It is designed for a three-phase network that can reach a maximum of AC 480 V +10% at the line side and operate at up to 60 Hz. The filter carries a rated line current of 75 A, so connected drives can draw continuous current at that level without excessive voltage drop through the input stage. Housing ventilation openings give the unit a protection level of IP10, which helps keep large solid objects out while still allowing heat to escape from the passive components. For short overloads, it tolerates currents equal to 1.5 × In for one minute per hour, which helps accommodate brief current peaks during motor starting or braking. Connection terminals accept copper conductors up to 25 mm², supporting low-resistance wiring on high-current paths.

Thermal limits extend from -25 °C to +85 °C, allowing the filter to withstand a broad temperature span in industrial environments. Under nominal load, the internal inductors and capacitors dissipate only 20 W, which reduces the added thermal burden inside the control cabinet. A mass of 4 kg supports panel-mount installation without unusually heavy support hardware. The one-minute-per-hour overload window fits applications in which servo axes accelerate intermittently and then return to steady current demand.