Mersen Q1006103 - High Voltage DIN Back-up fuse for Transformer Limitor® VDE T4 12kVAC IEC 100A d88mm, L442mm With Striker Standard 80N
Mersen

Q1006103

Alternate Item Number: 45DB120V100P-3

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Overview

Mersen Q1006103 is a high-voltage DIN back-up fuse designed for transformer protection in compliance with IEC 60282-1 and VDE 0670 T4 standards. This Limitor®-P back-up fuse provides reliable short-circuit current protection for transformers operating at 12kV AC, with a rated current of 100A and a breaking capacity of 63kA. The fuse features a ceramic body, silver fuse elements, and silver-plated copper caps for superior thermal and electrical performance. With a power dissipation of 91W at rated current and a cold resistance of 6.55 mΩ, the Q1006103 ensures efficient operation while maintaining safety margins. The 80N striker mechanism provides visual and mechanical indication of fuse operation, enabling quick fault identification. Weighing 3.2kg and measuring 88mm in diameter with a 442mm length, this fuse is designed for DIN rail mounting in high-voltage switchgear and controlgear applications. Certified for German VDE standards, the Q1006103 is ideal for transformer protection in industrial, utility, and commercial electrical systems where reliable fault interruption is critical. The fuse’s design includes a standardized d88mm diameter and L442mm length to ensure compatibility with existing DIN rail systems and high-voltage switchgear configurations. Its high breaking capacity of 63kA makes it suitable for applications requiring robust fault current interruption, while the 100A rated current supports continuous operation under typical transformer load conditions. The silver-plated copper caps enhance corrosion resistance and maintain low contact resistance over time, contributing to long-term reliability. The striker mechanism’s 80N activation force ensures consistent tripping under fault conditions, reducing downtime in critical applications. The ceramic body provides high dielectric strength and thermal stability, essential for high-voltage environments. This fuse is specifically engineered for transformer protection, where reliable operation under fault conditions is paramount to prevent damage to electrical infrastructure.
  • Rated voltage: 12kV AC (IEC 60282-1, VDE 0670 T4 compliant)
  • Rated current: 100A with 63kA breaking capacity
  • Ceramic body with pure silver fuse elements and silver-plated copper caps
  • Power dissipation: 91W at rated current, cold resistance 6.55 mΩ
  • Striker mechanism (80N) for visual/mechanical fault indication
  • Dimensions: 88mm diameter x 442mm length, weight 3.2kg
  • Minimum breaking current: 400A, clearing I²t: 220 kA²s

Specifications

AC Voltage Rating
12 kV
Amperage Rating
100 A
Application
HV Transformer protection
Body Material
Ceramic
Brand Name
Mersen
Connection
Cylindrical
Connection Material
Silver-Plated Copper
Interrupt Rating
32 kA
Mounting
Clip
Size
20 x 3.46 in
Size
508 x 88 mm
Special Features
High breaking capacity High current limitation Low switching voltage Quick breaking Medium striker 80N/30mm Indoor and outdoor applications Energy efficency New cap design for a better compatibility with all types of clips and easier assembly Coordination with IEC 60787, IEC 62271-105, IEC/TR 62655
Standard
IEC 60282-1 VDE 0670 part 4 DIN 43625
Sub Brand
Limitor®
Type
DIN HV Back-up Fuses for Transformers
Type Of Indicators
Striker
Package Dimensions (L x W x H)
20 in x 3.46 in x 3.46 in
Package Dimensions (L x W x H)
508 mm x 88 mm x 88 mm
Package Weight (Imperial)
7.055 lb
Package Weight (Metric)
3.200 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.