NBH-30-681

Overview

The NBH-30-681 is a single-phase power line filter module manufactured by Cosel USA, Inc. It provides two-stage EMC/EMI filtering for AC and DC circuits. The unit is rated for a continuous current of 30 A and operates at voltages up to 250 VAC or 250 VDC. Designed for chassis mounting, this component serves as a noise suppression device in electrical systems requiring compliance with electromagnetic interference standards.

Feature Summary

• Two-stage filtering configuration for enhanced noise attenuation
• Chassis mount design for secure installation
• Single-phase compatibility for standard power lines

Applications

• General purpose industrial equipment
• Power supply input stages
• Electromagnetic compatibility (EMC) mitigation

Procurement Notes

Verify the specific suffix designation when ordering, as variants such as NBH-30-681-D exist with different mounting styles like DIN rail. Confirm that the chassis mount version matches your enclosure requirements. Ensure the 30 A current rating and 250 V voltage limits align with your system's operational parameters before procurement.

Selection Notes

Select this model when a two-stage single-phase filter is required for chassis integration. Compare against DIN rail variants if space constraints differ. Ensure the application does not exceed the 30 A current capacity or 250 V voltage rating. Verify that the physical dimensions fit the designated chassis opening.

Part Context

This component belongs to the NBH series of power line filters from Cosel USA, Inc. The series includes various ratings and mounting options. The NBH-30-681 specifically denotes the 30 A chassis-mount variant within this product family, distinct from the NAC or TAH series which may offer different configurations.

Replacement Considerations

Direct substitutes include the NBH-30-681-D, though it features DIN rail mounting rather than chassis mounting. Cross-reference physical dimensions and terminal types to ensure mechanical compatibility. Verify that alternative models maintain the same 30 A current rating and two-stage filtering performance.