The Schaffner FS28315-64-34 is a three-phase EMI/RFI line filter designed for the suppression of electromagnetic interference in industrial power systems.

This filter is used to reduce conducted noise on power lines, both in input and output, improving the electromagnetic compatibility (EMC) of equipment and electronic systems.

⚙️ Electrical Specifications

• Manufacturer: Schaffner
• Model: FS28315-64-34
• Equivalent series: FN3256H-64-34
• Frequency: 50–60 Hz

🔌 Voltage & Current Ratings

• Rated voltage:
  • 3 × 520 VAC (phase-to-phase)
  • 300 VAC (phase-to-neutral)
• Rated current:
  • 64 A @ 50°C

🔧 Configuration

• System: Three-phase + neutral (3P + N + PE)

Connections:

• Input (LINE): L1, L2, L3, N
• Output (LOAD): L1’, L2’, L3’, N’
• Integrated protective earth (PE)

🛡️ Function

• Reduction of conducted electromagnetic interference
• High-frequency noise attenuation
• Protection of sensitive equipment
• Improvement of EMC compliance

📜 Certifications

• ENEC
• UL Recognized (UR)
• CSA

🏗️ Construction Features

• Shielded metal enclosure
• Panel or cabinet mounting
• High-current screw terminals

Recommended tightening torque:

• LINE: 7.0 – 8.0 Nm
• LOAD: 4.0 – 4.5 Nm

⚡ Typical Applications

• Inverters and drives (VFD)
• Photovoltaic systems
• Industrial machinery
• Power distribution panels
• Automated systems