Mersen T228522 - DIN NH Standard fuse-link gG Size NH2 500VAC 250VDC 500A live tags Double indicator Body width 52 mm
Mersen

T228522

Alternate Item Number: NH2GG50V500


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Overview

The Mersen T228522 DIN NH2 fuse-link (SKU: T228522) is a high-breaking capacity (gG) fuse designed for robust protection in low-voltage industrial applications. Rated for 500V AC and 250V DC at 500A, this fuse-link features live gripping lugs and a double indicator for clear visual status confirmation. With a body width of 52mm and a power dissipation of 43W at rated current, it provides reliable overload and short-circuit protection for cables and equipment. Engineered for the IEC NH fuse system, the T228522 is part of a modular plug-in system that includes compatible fuse-bases, replacement devices, and pullers. The gG classification ensures full-range breaking capacity, interrupting currents from the lowest fusing level up to its maximum rating without additional protective devices. This makes it ideal for protecting industrial setups, motor circuits, and distribution panels where high short-circuit currents are a concern. Key applications include motor protection, transformer circuits, and general industrial distribution. The double indicator design allows for quick identification of blown fuses, reducing downtime during maintenance. Compatible with standard NH2 fuse bases, the T228522 is a direct replacement for systems requiring 500A continuous current with a breaking capacity up to its rated limits. Always installed by qualified professionals due to non-interchangeability risks in the NH system.
  • Rated 500A continuous current with 500V AC / 250V DC compatibility
  • Full-range breaking capacity (gG) for overload and short-circuit protection
  • Double indicator for clear visual status of fuse condition
  • Live gripping lugs for secure connection in NH2 fuse bases
  • 52mm body width, 43W power dissipation at rated current
  • Part of IEC NH fuse system for industrial distribution and motor protection

Specifications

AC Voltage Rating
500 V
Amperage Rating
500 A
Application
gG: general purpose cable and line protection
Body Material
Ceramic
Brand Name
Mersen
Connection
Plain Blades
Connection Material
Silver-Plated Copper
DC Voltage Rating
250 V
Interrupt Rating
120 kA
Mounting
Clip
Size
5.91 x 2.05 x 2.91 in
Size
150 x 52 x 74 mm
Special Features
Dimensions according to DIN 43 620 parts 1 to 4 Non-isolated gripping lugs Double indicator 0 cadmium
Standard
VDE 0636 Part 201 IEC 60269-1 and -2
Type
IEC NH Fuse-Links
Type Of Indicators
Double indicator
Voltage Rating
500 VAC
Package Dimensions (L x W x H)
5.91 in x 2.05 in x 2.91 in
Package Dimensions (L x W x H)
150 mm x 52 mm x 74 mm
Package Weight (Imperial)
1.411 lb
Package Weight (Metric)
0.640 kg
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POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

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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.