Product Description:

The NFD02.1-460-008 is a mains filter produced by Bosch Rexroth Indramat within the NFD Mains Filters series. Installed between the utility supply and the power section of drive controllers, this component suppresses conducted electromagnetic interference and provides a low-impedance return path for leakage currents. In multi-axis automation cabinets it keeps emissions inside regulatory limits and protects neighboring equipment from high-frequency noise generated by pulse-width-modulated inverters. Such filtering helps ensure stable operation of servo drives and sensors.

Electrically, the unit is designed for a 3-phase supply and can be connected to networks up to AC 480 V +10%. It handles a rated line current of 7.5 A without exceeding its thermal limits and remains compatible with either 50/60 Hz frequencies, allowing use on European and North American grids. Internal inductance and capacitance generate only 8.7 W of power dissipation at the specified current reference point, so cabinet temperature rise is modest and additional forced ventilation is seldom required. The filter’s design maintains differential-mode and common-mode attenuation across the complete frequency spectrum expected from modern IGBT drive stages, ensuring that drive-generated switching edges are not propagated back onto the facility mains.

All ratings are referenced to an ambient temperature of 45 °C, so derating may be required above this threshold. The housing is classified as IP10, giving finger protection while permitting adequate airflow through the choke assembly. Power and ground conductors up to 6 mm² can be landed on the spring terminals, matching the current rating with minimal resistive losses. During production testing each filter withstands a dielectric strength of 2800 VDC for two seconds between lines and protective earth, confirming insulation integrity. With a mass of 1.5 kg, the unit mounts easily on DIN rail or panel without adding significant load to enclosure hardware.