Mersen U09322 - End Barrier for 250A 30A Class H and K and R adder fuseholder
Mersen

U09322

Alternate Item Number: 782001671785

UPC: 782001671785

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Minimum Qty: 25

Multiplier: 25

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Overview

The Mersen U09322 End Barrier is a precision-engineered insulating component designed for 250A Class H, K, and R fuseholders. This end barrier provides critical electrical isolation at the terminal ends of fuseholder assemblies, preventing accidental contact with live components during fuse replacement or maintenance. Manufactured from durable insulating materials, the U09322 ensures long-term reliability in harsh industrial environments such as motor control centers, switchgear, and power distribution panels. Its design supports compliance with electrical safety standards by mitigating arc flash risks and short-circuit hazards. Compatible with Mersen’s 250A Class H, K, and R fuseholders, this end barrier integrates seamlessly into existing systems, offering a cost-effective solution for enhancing personnel safety and operational continuity. The U09322 is a US-made component, part of Mersen’s trusted line of overcurrent protection accessories.
  • Provides electrical isolation at fuseholder terminal ends
  • Compatible with 250A Class H, K, and R fuseholders
  • Durable insulating construction for industrial environments
  • Prevents accidental contact and arc flash hazards
  • US-made component for Mersen fuseholder systems

Specifications

Application
Used with adder poles to make a single pole fuseholder
Brand Name
Ferraz Shawmut
Phase
1
Type
End Barrier
Voltage Rating
250 VAC
Package Weight (Imperial)
0.100 L
Package Weight (Metric)
0.045 kg
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Frequently Asked Questions about Mersen

What industries and applications are Mersen products used for?

Mersen products are used across diverse industrial sectors including solar power, electric vehicles, buildings/construction, industrial automation, power distribution, HVAC, elevators, telecommunications, and specialty manufacturing. Key application areas include circuit protection, surge protection, battery module protection, electrical safety systems, and power management for residential, commercial, and utility-scale installations.

What are the main product lines offered by Mersen?

Mersen offers five primary electrical power product lines: IEC and UL/CSA Fuses and Fusegear, Surge Protection, Low Voltage Disconnect Switches, Power Distribution Blocks, and Engineered Solutions. Their comprehensive range includes specialized components like high-speed fuses, modular fuse holders, surge arresters, and custom-engineered electrical protection systems for industrial and power management applications.

What are the key features of Mersen products?

Mersen products feature advanced electrical protection and power management solutions with key characteristics including finger-safe design, compact modularity, and high-performance safety features. Their product lines span electrical power components like fuses, surge protection, power distribution blocks, and specialized solutions for industrial, solar, and building applications. Critical features include UL/CSA approvals, high short-circuit current ratings, and innovative technologies like the Fuse Control™ program that minimize electrical risks and optimize system performance.

What environmental ratings do Mersen products have?

Mersen products meet rigorous environmental ratings across multiple standards, including UL 508A Type 1, 2, 3, 4, 4X, 12, and 13, CSA Type 1, 2, 3, 4, 4X, 12, and 13, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13. They feature IEC 60529 IP66 protection, with enhanced UV inhibitors for outdoor weathering and operating temperatures ranging from -40°C to 130°C (-40°F to 266°F). These ratings ensure superior protection in wet, corrosive, and challenging industrial environments.

What accessories are available for Mersen products?

Mersen offers multiple accessories for their fuse blocks and systems, including safety pullers (DFC3M and DFC3LP), DIN-rail adapters (DRM), bus bars, auxiliary contacts, and specialized mounting hardware. Key accessories include the DFC3M safety puller for 1-1/2" x 13/32" midget or Class CC fuses, the DRM adapter for mounting 303 series fuse blocks on DIN-rail, and UltraSafe fuse module accessories like bus bars and auxiliary contacts that enable module interconnection and monitoring.

How are Mersen products typically installed?

Mersen products are typically installed in electrical distribution systems, control panels, and industrial automation environments using multiple mounting options. These include service entrance panel mounting, distribution panel installation, control panel DIN rail mounting, and custom engineered solutions like Fused Coordination Panelboards. Installation depends on the specific product type, such as fuses, surge protective devices, or switches, and is designed to provide electrical protection and circuit safety in various industrial and commercial applications.

What certifications and standards do Mersen products comply with?

Mersen products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Our products meet rigorous safety and performance standards for industrial applications across North America, China, Russia, and other global markets, ensuring compliance and reliability in electrical power and advanced materials solutions.

What technical support does Mersen offer?

Mersen provides comprehensive technical support through multiple channels, including technical experts located in your time zone who can assist with product selection, application guidance, and troubleshooting. Their Fuse Control™ program offers a free Fuse Inventory Audit & Analysis, and customers can access technical resources through their sales representatives and online platform ep.mersen.com.