FN258L-42-33

Overview

The Schaffner FN258L-42-33 is a three-phase EMC/RFI power line filter designed for industrial applications. It supports a rated current of 42 A and operates at voltages up to 480 V AC at 60 Hz. The unit features terminal block connections and chassis mounting. Key electrical parameters include a leakage current of 33 mA and a maximum operating temperature of +100°C, with a minimum of -25°C. Physical dimensions are approximately 300 mm in length, 70 mm in width, and 185 mm in height, weighing 3 kg.

Feature Summary

• Provides electromagnetic interference suppression for three-phase power lines
• Utilizes safety-rated terminal block connections for secure wiring
• Engineered for low leakage current operation
• Constructed for robust chassis mounting in industrial environments

Applications

• Industrial machinery power conditioning
• Three-phase motor drive systems
• Factory automation equipment
• Power distribution units requiring EMI filtering

Procurement Notes

Verify component authenticity through authorized TE Connectivity or Schaffner distributors. Confirm that the specific part number matches project requirements for current rating and voltage class. Check for obsolescence status as this model may be discontinued. Ensure compliance with local electromagnetic compatibility regulations before deployment.

Selection Notes

Select this filter when three-phase noise suppression is required for loads up to 42 A. Verify that the installation space accommodates the specified physical dimensions. Ensure the terminal block interface aligns with existing wiring harnesses. Confirm that the leakage current specification meets safety isolation requirements for the connected equipment.

Part Context

This component belongs to the FN258 series of power line filters manufactured by Schaffner, now part of TE Connectivity. The series is recognized for providing reliable EMI/RFI attenuation in demanding industrial settings. The FN258L variant specifically addresses low leakage current needs while maintaining high current capacity for three-phase applications.

Replacement Considerations

Publicly confirmed substitute part numbers include FN3288-40-33-C27-R65. Verify compatibility regarding current ratings, physical footprint, and connection types before substitution.