Mersen P1000283 - High Voltage DIN Back-up fuse for Transformer Limitor® VDE T402 24kVAC IEC 63A d65mm, L442mm With Thermal Striker 80N
Mersen

P1000283

Alternate Item Number: 45DB240V63PTD

Contact for Pricing

Overview

The Mersen Limitor®-PTD High Voltage (HV) back-up fuse, SKU P1000283, is engineered for reliable short-circuit protection of high-voltage transformers. This fuse-link adheres to stringent international standards, including IEC 60282-1 and VDE 0670 T402, ensuring compliance and safety in critical power systems. It is rated for 24 kVAC operation and a continuous current of 63 A. The fuse features a robust ceramic body with a diameter of 65mm and a length of 442mm, designed for compatibility with standard HV switchgear configurations. The internal fuse element is constructed from pure silver, known for its excellent conductivity and resistance to corrosion, paired with silver-coated copper caps to ensure consistent electrical contact and performance under fault conditions. A key safety feature is the integrated thermal striker, which activates at an 80N force, providing a clear visual indication of fuse operation and potential transformer issues. This Mersen Limitor®-PTD fuse is suitable for deployment in both air and gas-insulated switchgear environments. It is a recommended component by leading switchgear manufacturers such as Siemens and Ormazabal for transformer protection applications. The durable ceramic construction offers superior mechanical strength and high dielectric properties, making it resilient in demanding industrial settings. Certified specifically for transformer backup protection, this fuse-link meets the exacting requirements of modern high-voltage electrical infrastructure. Its precise specifications and reliable operation make it an essential component for safeguarding valuable transformer assets.
  • 24 kVAC voltage rating for high-voltage applications
  • 63 A current rating for transformer protection
  • d65mm diameter, L442mm length for standard switchgear compatibility
  • Integrated 80N thermal striker for visual operation indication
  • Pure silver fuse element and silver-coated copper caps for reliable performance

Specifications

AC Voltage Rating
24 kV
Amperage Rating
63 A
Application
HV Transformer protection
Body Material
Ceramic
Brand Name
Mersen
Connection
Cylindrical
Connection Material
Silver-Plated Copper
Current Rating
63A
Interrupt Rating
65 kA
Material
ceramic body, pure silver fuse element, silver-coated copper caps
Mounting
Clip
Mounting Type
DIN
Series
Limitor®-PTD
Size
20 x 2.56 in
Size
508 x 65 mm
Size
d65mm, L442mm
Special Features
High breaking capacity High current limitation Low switching voltage Medium striker 80N/30mm CPD striker: controlled power dissipation Indoor and outdoor applications Quick breaking Non-ageing Energy efficiency 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 and VDE 0670 T303
Standard
IEC 60282-1 VDE 0670 part 4 VDE 0670 part 402 DIN 43625
Sub Brand
Limitor®
Type
DIN HV Back-up Fuses for Transformers
Type Of Indicators
Striker
Voltage Rating
24kVAC
Package Dimensions (L x W x H)
20 in x 2.56 in x 2.56 in
Package Dimensions (L x W x H)
508 mm x 65 mm x 65 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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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.

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.