FN258-75-34

Overview

The FN258-75-34 is a three-phase EMC/RFI power line filter manufactured by TE Connectivity / Schaffner. It features a chassis mount design with terminal block termination for robust industrial integration. The unit is rated for 75 A current and 480 VAC voltage, operating within a frequency range of 0 Hz to 60 Hz. Physical dimensions are 300 mm in length, 80 mm in width, and 220 mm in height, weighing approximately 4 kg. It exhibits a leakage current of 3 mA and functions reliably between -25 °C and +100 °C. The component holds UL, CSA, and IEC/EN compliance certifications.

Feature Summary

• Provides electromagnetic interference mitigation specifically designed for three-phase power drive systems and inverters.
• Utilizes a chassis mount configuration with terminal block connections for secure mechanical installation.
• Maintains low leakage current characteristics suitable for sensitive industrial applications.

Applications

• Three-phase power drive systems
• Industrial inverter filtering
• Electromagnetic compatibility (EMC) protection

Procurement Notes

Verify the end-of-life status before procurement planning. The manufacturer issued a product discontinuance notification on February 5, 2024, indicating limited availability. Confirm that existing stock or last-time buy options meet project timelines. Ensure replacement strategies account for potential supply chain constraints associated with discontinued components.

Selection Notes

Select this component for applications requiring high-current three-phase filtering with specific leakage current limits. Verify that the 75 A rating and 480 VAC specification align with system requirements. Consider the physical dimensions and chassis mounting style during enclosure design. Evaluate alternative models if continuous production volume is required due to the discontinued status.

Part Context

The FN258 series represents a standard solution for three-phase power electronics filtering. This specific model addresses noise suppression in industrial environments where power drives generate significant electromagnetic interference. The design prioritizes durability and compliance with international safety standards for heavy-duty electrical equipment.

Replacement Considerations

Consult official documentation for confirmed substitute part numbers. The FN258L-75-34 and FN258P-75-34 are related variants within the same family. Verify technical equivalence before substitution, as differences may exist in leakage current specifications or termination types.