FN3258-42-33

Overview

The Schaffner FN3258-42-33 is a three-phase ultra-compact EMC/RFI power line filter designed for industrial applications. It features a rated current of 42 A and operates at voltages up to 440 VAC or 480 VAC, with a standard frequency of 50 Hz or 60 Hz. The unit utilizes chassis mounting and wire termination for secure integration. Key electrical specifications include a leakage current of 33 mA and a maximum operating temperature of +100°C. The physical dimensions are approximately 270 mm in length, 90 mm in depth, and 150 mm in height, weighing 1.4 kg.

Feature Summary

• Ultra-compact and slim design optimized for space-constrained installations
• Engineered specifically for motor drive applications to suppress electromagnetic interference
• Robust construction supporting high thermal performance up to 100°C

Applications

• Motor drive systems
• Industrial machinery power conditioning
• EMC suppression in three-phase power lines

Procurement Notes

Verify the specific voltage rating (440 VAC vs 480 VAC) required for your application against the datasheet, as sources vary. Confirm that wire termination is compatible with your wiring infrastructure, as this model differs from terminal block variants. Check for obsolescence status, as some listings indicate discontinuation. Ensure compliance with local safety standards such as UL, CSA, or IEC/EN if certification marks are required for your deployment.

Selection Notes

Select this model when space is limited but high current capacity (42 A) is necessary for three-phase loads. Compare leakage current requirements; this unit specifies 33 mA, which may differ from lower-leakage alternatives like the FN3258-30-33. Ensure the chassis mounting style and wire termination method align with your enclosure design. Consider the thermal environment, as the device supports operation up to 100°C.

Part Context

This component belongs to the FN3258 series of ultra-compact three-phase filters by Schaffner (TE Connectivity). The series is characterized by its slim profile and suitability for motor drive environments. Other models in the family include FN3258-16-44, FN3258-30-33, and FN3258-100-35, offering varying current ratings and termination styles within the same compact form factor philosophy.

Replacement Considerations

FN3258-42-47 is listed as a potential substitute, though it uses wire termination and has a 440 VAC rating. Verify compatibility carefully as the original part number may be discontinued.