FN3042-20-61-C21-R65

Overview

The Schaffner FN3042-20-61-C21-R65 is a three-phase EMC/RFI power line filter designed for chassis or DIN rail mounting. It operates at frequencies from 0 Hz to 60 Hz with a rated current of 20 A and voltage ratings of 305 VAC and 530 VAC. The unit features M4 screw terminals for both input and output connections, utilizing a Delta (3-wire + ground) configuration. Key electrical specifications include a leakage current of 190 uA and a capacitance value of 220 nF. Constructed with MnZn core technology and a plastic housing with a metal ground plate, it ensures low weight while maintaining high-performance EMC filtering capabilities.

Feature Summary

• Low leakage current design suitable for sensitive equipment
• Compact tight-packaged construction with plastic housing and metal ground plate
• Versatile mounting options supporting both chassis and DIN rail installation

Applications

• Industrial machinery requiring three-phase power conditioning
• Medical equipment with strict leakage current limitations
• Data center infrastructure and server power supplies

Procurement Notes

Verify the specific terminal type and mounting style required for your application, as the C21 suffix indicates ring terminals. Confirm that the 20 A current rating and 530 VAC voltage rating align with your system's operational parameters. Ensure compatibility with the Delta configuration and check if DIN rail or chassis mounting is preferred for your enclosure design before ordering.

Selection Notes

Select this model when a three-phase filter with low leakage current is required for 20 A applications. The C21 designation specifies ring terminal connections, which differs from screw terminal variants. Consider the compact form factor if space is limited, and ensure the operating temperature range meets your environmental conditions. Verify that the 0 Hz to 60 Hz frequency range matches your power supply specifications.

Part Context

This component belongs to the Schaffner FN3042 series, which specializes in low-leakage three-phase filters. The series is engineered for applications where safety and signal integrity are critical. The FN3042-20-61-C21-R65 variant specifically addresses the need for high-current handling with minimal capacitive coupling to ground, making it distinct from standard EMI filters in sensitive environments.

Replacement Considerations

Direct substitutes within the same series include FN3042-20-61-C19-R65, which shares similar electrical characteristics but may differ in terminal configuration or leakage current specifications. Always verify pinout compatibility and physical dimensions before swapping components to ensure proper integration into existing assemblies.