Mersen N1030504A - DIN NH Standard fuse-link gTr Size NH3 400VAC 289A 200KVA live tags Center indicator Body width 50 mm
Mersen

N1030504A

Alternate Item Number: NH3GTR200KVA


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Specification Sheet

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Overview

The Mersen N1030504A DIN NH3 fuse-link (SKU: N1030504A) is a high-rupture-capacity (HRC) fuse designed for transformer protection in low-voltage industrial applications. Rated at 400VAC, 289A, and 200kVA, this NH3-size fuse-link features a 50mm body width, blade contacts, and a center indicator for visual status confirmation. Engineered for compatibility with the NH fuse system, it ensures optimal selectivity with gG-type NH fuse-links while providing superior overload and short-circuit protection for transformers. Key specifications include a maximum power dissipation of 23.1W at rated current, enabling reliable operation under continuous load conditions. The fuse-link can sustain 1.3 times nominal current for up to 10 hours and operates within 2 hours at 1.5 times nominal transformer current, aligning with transformer thermal characteristics. The plug-in mounting design with live gripping lugs simplifies installation and replacement in DIN-compliant fuse bases. Ideal for protecting distribution transformers up to 200kVA, the N1030504A is certified for IEC 60269 compliance and manufactured by Mersen in France. Its robust construction ensures durability in harsh industrial environments, while the standardized NH system guarantees interoperability with compatible fuse bases and pullers. Trusted by professionals for overcurrent protection, this fuse-link delivers predictable performance and compliance with international safety standards.
  • Rated 400VAC, 289A, 200kVA for transformer protection
  • NH3 size with 50mm body width and blade contacts
  • Center indicator for visual status confirmation
  • Plug-in mounting with live gripping lugs
  • 1.3x nominal current load capacity for 10 hours

Specifications

AC Voltage Rating
400 V
Amperage Rating
289 A
Application
Protection of transformers
Body Material
Ceramic
Brand Name
Mersen
Connection
Plain Blades
Connection Material
Silver-Plated Copper
Interrupt Rating
100 kA
Mounting
Clip
Size
5.91 x 1.97 x 3.5 in
Size
150 x 50 x 89 mm
Special Features
Maximum transformer capacity (up to 1,3 x In) Reduction of unnecessary interruption of operation Precise cut off of overload Characteristic adapted to the transformer Resistant to ageing Selectivity to fuse links gG High current limiting High breaking capacity Easy selection between transformer and fuse link
Standard
VDE 0636 Part 201 IEC 60269-1 and -2
Type
IEC NH Fuse-Links
Type Of Indicators
Center indicator
Package Dimensions (L x W x H)
5.91 in x 1.97 in x 3.5 in
Package Dimensions (L x W x H)
150 mm x 50 mm x 89 mm
Package Weight (Imperial)
2.205 lb
Package Weight (Metric)
1.000 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.