NBM-20-471

Overview

The Cosel USA, Inc. NBM-20-471 is a single-phase EMC/EMI power line filter module designed for general-purpose noise suppression. It features a two-stage filtering architecture with push-down terminal block connections and DIN rail mounting style. The component supports AC 250V and DC 250V ratings with a continuous current capacity of 20 A. It incorporates 470 pF capacitance to achieve low leakage current performance, specified at 50 uA or 100 uA maximum depending on configuration.

Feature Summary

• Two-stage filtering architecture for enhanced electromagnetic interference suppression
• Low leakage current design suitable for sensitive medical or precision equipment
• Push-down terminal block interface for secure electrical connections
• DIN rail mounting style for standardized industrial panel integration

Applications

• General-purpose electronic equipment requiring EMI noise reduction
• Medical devices with strict leakage current limitations
• Industrial control systems utilizing DIN rail enclosures
• Power supply input stages for single-phase AC/DC circuits

Procurement Notes

Verify the specific suffix designation when ordering, as variants such as NBM-20-471-D exist within the product family. Confirm that the required leakage current specification aligns with the available configurations (50 uA vs 100 uA max). Ensure compatibility with standard DIN rail profiles during mechanical integration planning. Cross-reference the manufacturer part number against official Cosel documentation to avoid substitution errors.

Selection Notes

Select this model for applications requiring robust single-phase filtering in compact DIN rail formats. The 20 A rating suits moderate power loads, while the low leakage characteristic addresses safety compliance needs. Evaluate the 470 pF capacitance value against system ground reference requirements. Consider the push-down terminal type for maintenance accessibility compared to screw-terminal alternatives.

Part Context

This component belongs to the NB series of power line filters manufactured by Cosel USA, Inc. The series includes various current ratings and voltage specifications tailored for different industrial standards. The NBM-20-471 specifically targets the 20 A segment, offering a balance between high current handling and stringent electromagnetic compatibility performance for global market deployment.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data.