Mersen Q1000146 - High Voltage DIN Back-up fuse for Transformer Limitor® VDE T4 24kVAC IEC 50A d56mm, L442mm With Striker CPD 80N
Mersen

Q1000146

Alternate Item Number: 45DB240V50PT

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Overview

The Mersen Q1000146 is a high-voltage DIN back-up fuse specifically engineered for transformer protection in compliance with IEC 60282-1 and VDE standards. This Limitor®-PT HV fuse-link is designed for 24kV AC systems, providing essential short-circuit current protection for transformers within high-voltage switchgear and controlgear applications. The Q1000146 features a precise 50A current rating, a 56mm diameter, and a length of 442mm. It is equipped with a 80N striker pin, which offers remote indication of fuse operation, enhancing safety and operational awareness. Constructed with high-quality pure silver fuse elements and silver-plated copper caps, housed within a robust ceramic body, this fuse-link ensures long-term reliability and superior high breaking capacity. Certified for critical industrial and utility transformer protection systems, the Q1000146 delivers accurate fault interruption while maintaining operational safety. It is an ideal choice for applications requiring reliable back-up protection, particularly where primary protection devices might fail to clear faults effectively. Key specifications include a breaking capacity of 63 kA, a minimum breaking current (I3) of 205A, and a cold resistance (R20) of 26 mΩ. The power dissipation at In is 106 W. This fuse is manufactured in the US.
  • Rated for 24kV AC systems for transformer protection
  • 50A current rating with 63 kA breaking capacity
  • DIN back-up fuse compliant with IEC 60282-1 and VDE standards
  • Features 56mm diameter, 442mm length, and 80N striker pin
  • Constructed with pure silver elements and silver-plated copper caps for reliability

Specifications

AC Voltage Rating
24 kV
Amperage Rating
50 A
Application
HV Transformer protection
Body Material
Ceramic
Brand Name
Mersen
Connection
Cylindrical
Connection Material
Silver-Plated Copper
Connection Type
DIN Mounted
Connection Type
DIN-mounted
Current Rating
50 A
Interrupt Rating
63 kA
Material
Pure silver fuse element, silver-plated copper caps, ceramic body
Material
Silver, Copper, Ceramic
Material
Ceramic, Silver, Copper
Material
Pure silver fuse elements, silver-plated copper caps, ceramic body
Mounting
Clip
Mounting Type
DIN
Series
Limitor®-PT HV
Series
Limitor®-PT
Size
56 mm diameter x 442 mm length
Size
20 x 2.2 in
Size
508 x 56 mm
Size
d56mm, L442mm
Size
56mm x 442mm
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
Voltage Rating
24000 VAC
Voltage Rating
24 kV AC
Package Dimensions (L x W x H)
20 in x 2.2 in x 2.2 in
Package Dimensions (L x W x H)
508 mm x 56 mm x 56 mm
Package Weight (Imperial)
5.071 lb
Package Weight (Metric)
2.300 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.