Mersen W1054293 - DIN NH Standard fuse-link gG Size NH4a 500VAC 250VDC 1000A live tags Center indicator Body width 100.10 mm
Mersen

W1054293

Alternate Item Number: NH4AGG50V1000


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Specification Sheet

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Overview

The Mersen W1054293 is a DIN NH Standard fuse-link, size NH4a, designed for robust protection in industrial electrical systems. This gG type fuse-link offers a full range breaking capacity, capable of interrupting any current surge from the lowest fusing current up to its rated breaking capacity. It is specifically engineered to protect cables and equipment from the electrodynamic effects of very high short-circuit currents, ensuring operational safety and system integrity. With a rated voltage of 500VAC and 250VDC, and a substantial current rating of 1000A, this fuse-link is suitable for demanding applications. It features live gripping-lugs for safe handling and a center indicator for clear status visualization. The body width is precisely 100.10 mm, ensuring compatibility within the NH system. The NH system itself is a plug-in fuse system comprising a fuse-base, fuse-link with blade contact, and a fuse-link replacement device. Due to the design, which cannot guarantee non-interchangeability of rated current, handling by a qualified professional is mandatory. This Mersen fuse-link is manufactured in France (FR). Key specifications include: SKU W1054293, Manufacturer Mersen, Size NH4a, Type gG, Rated Voltage AC 500V, Rated Voltage DC 250V, Rated Current 1000A, Indicator Type: Center Indicator, Contact Type: Live Tags, Body Width: 100.10 mm. It is part of the IEC NH fuse-link series, designed for reliable performance and protection in medium to high-power electrical installations. The power dissipation at rated current is 78W, and it comes in a package of 1 unit with a weight of 2.58 kg.
  • Mersen NH Standard fuse-link, size NH4a
  • Rated for 500VAC and 250VDC operation
  • 1000A current rating for high-capacity protection
  • gG type for full range breaking capacity
  • Features live gripping-lugs and center indicator

Specifications

AC Voltage Rating
500 V
Amperage Rating
1000 A
Application
gG: General purpose (protection of cables and LV-networks)
Body Material
Ceramic
Brand Name
Mersen
Connection
Plain Blades
Connection Material
Silver-Plated Copper
Current Rating
1000A
DC Voltage Rating
250 V
Interrupt Rating
120 kA
Mounting
Clip
Series
GG
Size
7.87 x 3.94 x 48.62 in
Size
200 x 100 x 1235 mm
Size
NH4a 100.10 mm
Special Features
Dimensions in accordance with DIN 43 620 Live tags Middle indicator 0 cadmium
Standard
IEC/EN 60269-1 and -2 VDE 0636 Part 201
Type
IEC NH Fuse-Links
Type Of Indicators
Center indicator
Voltage Rating
500VAC 250VDC
Package Dimensions (L x W x H)
7.87 in x 3.94 in x 48.62 in
Package Dimensions (L x W x H)
200 mm x 100 mm x 1235 mm
Package Weight (Imperial)
5.688 lb
Package Weight (Metric)
2.580 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.