Mersen L1030111A - DIN NH Standard fuse-link gTr Size NH3 400VAC 63A 63KVA live tags Top indicator Body width 71 mm
Mersen

L1030111A

Alternate Item Number: NH32GTR63KVA-8


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Specification Sheet

Contact for Pricing

Overview

The Mersen L1030111A DIN NH fuse-link gTr (Size NH3) is a high-rupture-capacity (HRC) fuse designed for transformer protection in industrial and commercial electrical systems. Rated at 400VAC, 63A, and 63KVA, this fuse-link features live tags and a 71mm body width for compatibility with standard NH3 fuse bases. The gTr time/current characteristic is specifically optimized for transformer protection, offering superior selectivity compared to gG fuses. This fuse can sustain 1.3x nominal current for up to 10 hours and operates within 2 hours at 1.5x nominal transformer current, ensuring reliable overload protection. The NH system includes fuse-bases, terminal covers, phase barriers, and replacement devices (LV HRC fuse pullers) for safe operation. The L1030111A is part of Mersen’s NH3 series, which is designed for high-performance applications requiring precise fault interruption and thermal stability. The fuse-link meets DIN standards, ensuring compliance with European electrical safety regulations. Interchangeability of rated current is not guaranteed by design and must be managed by qualified professionals. Manufactured in France by Mersen, a leader in electrical protection solutions, the L1030111A combines durability with advanced engineering for critical infrastructure applications.
  • Rated 400VAC, 63A, 63KVA for transformer protection
  • gTr time/current characteristic optimized for transformer overloads
  • 71mm body width compatible with NH3 fuse bases
  • Live tags for safe handling and installation
  • Sustains 1.3x nominal current for 10 hours, operates in 2 hours at 1.5x nominal

Specifications

AC Voltage Rating
400 V
Amperage Rating
63 A
Application
Protection of transformers
Body Material
Ceramic
Brand Name
Mersen
Connection
Plain Blades
Connection Material
Silver-Plated Copper
Connection Type
live tags
Current Rating
63 A
Interrupt Rating
100 kA
Material
Ceramic/Metal
Mounting
Clip
Mounting Type
DIN NH System
Series
NH
Size
5.91 x 2.8 x 3.5 in
Size
150 x 71 x 89 mm
Size
NH3
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
Top indicator
Voltage Rating
400Vac
Package Dimensions (L x W x H)
5.91 in x 2.8 in x 3.5 in
Package Dimensions (L x W x H)
150 mm x 71 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.