Mersen V1000127 - High Voltage DIN Back-up fuse for Transformer Limitor® VDE T4 12kVAC IEC 31.5A d56mm, L292mm With Striker CPD 80N
Mersen

V1000127

Alternate Item Number: 45DB120V32PT

Contact for Pricing

Overview

The Mersen V1000127, part of the Limitor®-PT series, is a high-voltage DIN back-up fuse engineered for reliable transformer protection in high-voltage switchgear, controlgear, and electrical systems. Designed to meet IEC 60282-1 standards, this fuse-link is specifically dedicated to safeguarding transformers from the damaging effects of short-circuit currents. With a robust construction, Mersen utilizes premium materials to ensure exceptional performance and longevity. The fuse-elements are crafted from pure silver, renowned for its excellent conductivity and resistance to degradation. The caps are made of copper, further coated with silver to enhance electrical contact and minimize resistance. The body of the fuse is constructed from high-quality ceramic, providing superior insulation and thermal management capabilities. This specific model, SKU V1000127, features a voltage rating of 12 kVAC and a current rating of 31.5 A. Its physical dimensions are a diameter of 56mm and a length of 292mm. The inclusion of a striker mechanism with a CPD 80N rating provides an additional layer of operational safety and indication. For decades, Mersen HV fuse-links have been a trusted choice for critical protection applications, delivering consistent and dependable performance in demanding electrical environments. The Limitor®-PT series embodies this commitment to quality and reliability, offering a vital component for maintaining the integrity of high-voltage transformer installations.
  • High-voltage DIN back-up fuse for transformer protection
  • 12 kVAC voltage rating, 31.5 A current rating
  • Constructed with pure silver fuse-elements, silver-coated copper caps, and ceramic body
  • Dimensions: d56mm, L292mm
  • Includes striker mechanism (CPD 80N) for enhanced safety and indication

Specifications

AC Voltage Rating
12 kV
Amperage Rating
31.5 A
Application
HV Transformer protection
Body Material
Ceramic
Brand Name
Mersen
Connection
Cylindrical
Connection Material
Silver-Plated Copper
Interrupt Rating
63 kA
Mounting
Clip
Size
14.09 x 2.2 in
Size
358 x 56 mm
Special Features
High breaking capacity High current limitation Low switching voltage Quick breaking 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 Medium striker 80N/30mm CPD striker: controlled power dissipation Indoor and outdoor applications
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)
14.09 in x 2.2 in x 2.2 in
Package Dimensions (L x W x H)
358 mm x 56 mm x 56 mm
Package Weight (Imperial)
3.527 lb
Package Weight (Metric)
1.600 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.