NBH-20-471

Overview

The Cosel NBH-20-471-D is a single-phase EMC/EMI power line filter designed for DIN rail mounting. It supports AC voltages up to 250 VAC and DC voltages up to 250 VDC with a continuous current rating of 20 A. The unit features screw terminals for connection and utilizes a common mode noise filtering topology. Key electrical parameters include a capacitance value of 470 pF, a maximum leakage current of 50 uA, and an effective operating frequency range from 10 kHz to 10 MHz. The device withstands a voltage of 4000 VAC and weighs approximately 320 g.

Feature Summary

• Provides two-stage common mode noise filtration for single-phase power lines
• Features spring-loaded captive push-down terminals for secure connections
• Designed for direct DIN rail installation in industrial environments
• Capable of withstanding high voltage stress up to 4000 VAC

Applications

• Industrial machinery power conditioning
• Factory automation control systems
• Medical equipment power supply input stages
• Telecommunications infrastructure power distribution

Procurement Notes

Verify the specific suffix against official Cosel documentation to confirm terminal type and capacitance values. Ensure the selected variant matches the required voltage ratings and current capacity for the target application. Confirm RoHS compliance status through the manufacturer's latest datasheet before finalizing procurement orders.

Selection Notes

Select this component when a single-phase filter with a 20 A rating is required for DIN rail integration. The 470 pF capacitance value determines the attenuation characteristics within the specified frequency range. Ensure the system voltage does not exceed 250 VAC or 250 VDC limits to maintain safe operation and prevent dielectric breakdown.

Part Context

This model belongs to the Cosel NB series of power line filters. The series offers various current ratings and capacitance options to suit different EMI suppression needs. The NBH designation indicates specific housing and terminal configurations within this product family, distinguishing it from other mounting styles or performance tiers.

Replacement Considerations

Direct substitutes may include other NBH series variants with adjusted current or capacitance ratings. Verify pin compatibility and physical dimensions before swapping. Consult Cosel technical support for cross-reference data regarding equivalent performance specifications.

FAQ

What is the maximum leakage current for this filter?

The maximum leakage current is specified as 50 uA.

Does this filter use screw or push-down terminals?

The NBH-20-471-D variant uses screw terminals, while other suffixes may feature spring-loaded push-down terminals.