NF stands for power line filter. The number 008 represents the rated continuous current of 8 amperes. The code 443 indicates it is designed for 380 VAC to 440 VAC three-phase power supply systems.

Manufacturer is SEW-EURODRIVE. The part number of this filter is NF008-443. Its rated input voltage ranges from 380 VAC to 440 VAC, operating at 50 Hz or 60 Hz. The rated continuous current is 8 A, and it is suitable for drive units with a power rating around 4 kW. This is a three-stage EMC filter equipped with both common-mode and differential-mode suppression circuits. The protection class is IP20. It adopts standard DIN rail mounting inside control cabinets. The overall weight is approximately 1.5 kg. The product complies with CE, UL and RoHS standards.

This filter effectively attenuates high-frequency interference signals within the frequency range from 150 kHz to 30 MHz, significantly reducing total harmonic distortion of the power circuit. It provides bidirectional noise suppression, preventing drive-generated interference from feeding back to the grid and isolating external grid interference from affecting the normal operation of servo and inverter systems. The compact and sturdy structure is designed for cabinet installation, featuring reliable electrical performance and long service life under continuous industrial operation. It is a standard matching component for SEW low-power drive systems, simplifying EMC design and on-site commissioning for complete machines.

It is mainly applied to small and medium-power servo systems and frequency converter systems in industrial automation. Typical scenarios include packaging machinery, material handling equipment, small machine tools and assembly lines. It is universally used in all kinds of industrial equipment that requires strict electromagnetic compatibility between power drives and the public power network.