The Schaffner FS 21858-55-34 (also known as FN 3258-55-34) is a high-performance 3-phase EMI line filter engineered to suppress electromagnetic interference in industrial environments. With a nominal voltage rating of 3×480/275 V AC and a current capacity of 55 A at 50°C, it ensures clean power delivery and regulatory compliance for sensitive equipment and automation systems.

This filter is compatible with Bonfiglioli drives (Part No: SA200004 FTV055A) and Vector™ system number 1858591055, making it a trusted choice in drive technology, motor control, and industrial automation.

🔧 Key Specifications:

• Voltage Rating: 3×480/275 V AC, 50/60 Hz
• Current Rating: 55 A (at 50 °C ambient)
• Part Number: FN 3258-55-34
• Bonfiglioli Ref: SA200004 FTV055A
• Vector™ No: 1858591055
• Connection Terminals: L1, L2, L3 (Input) / L1’, L2’, L3’ (Output)
• Mandatory Earth Ground Connection (E)
• Mounting: Chassis mount
• Origin: Made in Thailand

✅ Features:

• High attenuation for EMI suppression in demanding applications
• Designed for frequency inverters, drives, and industrial control systems
• Meets international EMC standards
• Rugged construction for long-lasting reliability
• Compatible with Bonfiglioli and other major brands

🔗 Ideal For:

• Variable speed drives and inverters
• CNC and machine tools
• Factory automation and robotics
• Renewable energy and power conversion systems

📦 Includes: 1x Schaffner FS 21858-55-34 Filter (OEM packaged)

⚡ Reliable EMI protection for industrial power systems — engineered for performance and compliance.