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NF085-503

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NF085-503
May 28, 2026

NF085-503

NF085-503 is a high‑power three‑phase EMC line filter (Netzfilter) manufactured by SEW‑EURODRIVE. It is installed at the input side of frequency inverters and servo drives to suppress high‑frequency conducted interference (150 kHz–30 MHz) and protect the drive system from grid‑born noise and voltage fluctuations. Designed for 380–500 VAC systems, it is a standard match for SEW MOVIDRIVE, MDX, and other high‑power drive series, ensuring EMC compliance in demanding industrial environments.

Description

Model Explanation

  • NF: Netzfilter (power line filter)

  • 085: Rated continuous current 85 A

  • 503: Designed for 380–500 VAC three‑phase systems

Technical Specifications

  • Manufacturer: SEW‑EURODRIVE

  • Part Number: NF085-503 (08274150)

  • Input Voltage: 3‑phase AC 380–500 V, 50/60 Hz

  • Rated Current: 85 A (continuous)

  • Suitable Power: ~37–45 kW (matches SEW high‑power drives)

  • Power Loss: 35 W (at rated current)

  • Leakage Current: ≤ 30 mA

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

  • Protection Class: IP20 (EN 60529)

  • Mounting: Panel‑mount (control cabinet)

  • Weight: Approx. 3.5 kg

  • Temperature Range: −25 °C to +40 °C

  • Certifications: CE, UL, RoHS

Key Features

  • High Attenuation: Superior suppression of 150 kHz–30 MHz high‑frequency noise, effectively reducing total harmonic distortion (THD).SEW-EURODRIVE

  • Bidirectional Isolation: Prevents drive‑generated noise from polluting the grid and isolates grid disturbances from affecting drive stability.SEW-EURODRIVE

  • Robust Construction: Heavy‑duty design for continuous operation in harsh industrial conditions; compact panel‑mount saves cabinet space.

  • EMC Compliance: Helps the entire system meet EN 61800‑3 requirements for variable‑speed drive systems.SEW-EURODRIVE

Applications

  • Industrial automation: 37–45 kW servo and frequency converter systems.

  • Typical scenarios: Large machine tools, metallurgical equipment, cranes, heavy conveyors, and process machinery.

  • Preferred matching component for SEW high‑power drives (MOVIDRIVE, MDX series) in 380–500 V networks.SEW-EURODRIVE


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