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NF050-503

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NF050-503
May 28, 2026

NF050-503

Product Overview NF050-503 is a three-phase EMC line filter (Netzfilter) by SEW‑EURODRIVE. It is installed upstream of frequency inverters and servo drives to suppress high‑frequency conducted interference (150 kHz–30 MHz) and protect drives from grid noise. Designed for 400–500 V systems, it is widely matched with SEW MOVIDRIVE, MDX, and other high‑power drive series for EMC compliance in industrial environments.

Description

Model Explanation

  • NF: Netzfilter (power line filter)

  • 050: Rated continuous current 50 A

  • 503: Designed for 400–500 VAC three‑phase systems

Technical Specifications

  • Manufacturer: SEW‑EURODRIVE

  • Part Number: NF050-503

  • Input Voltage: 3‑phase AC 400–500 V, 50/60 Hz

  • Rated Current: 50 A (continuous)

  • Suitable Power: ~22–30 kW (matches SEW high‑power drives)

  • Filter Type: 3‑stage EMC filter (common‑mode + differential‑mode suppression)

  • Protection Class: IP20

  • Mounting: Panel‑mount (control cabinet)

  • Weight: Approx. 3.5 kg

  • Certifications: CE, UL, RoHS

Key Features

  • High Attenuation: Strong suppression of 150 kHz–30 MHz noise, reducing THD significantly.

  • Bidirectional Isolation: Blocks drive‑generated noise to the grid and grid disturbances to the drive.

  • Robust & Compact: Heavy‑duty construction for continuous operation; panel‑mount saves cabinet space.

  • EMC Compliance: Helps meet EN 61800‑3 for variable‑speed drive systems.

Applications

  • Industrial automation: 22–30 kW servo and frequency converter systems.

  • Typical scenarios: Machine tools, metallurgical equipment, cranes, large conveyors, and process machinery.

  • Standard match for SEW high‑power drives (MOVIDRIVE, MDX series) in 400–500 V networks.


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