Mersen P1018315 - High Voltage DIN Back-up fuse for Transformer Limitor® VDE T402 12kVAC IEC 100A With d78mm, L292mm Thermal Striker 80N Low power losses
Mersen

P1018315

Alternate Item Number: 45DB120V100PTS2

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Overview

Mersen Limitor®-PTS P1018315 is a high-voltage DIN back-up fuse specifically engineered for transformer protection within 12kVAC systems. This fuse is rated for a continuous current of 100A and possesses a substantial breaking capacity of 63kA, ensuring robust protection against fault conditions. A key safety feature of the P1018315 is its integrated thermal striker, calibrated to 80N. This striker is designed to activate and interrupt the circuit in the event of overheating within switchgear compartments, thereby preventing potential damage and ensuring operational safety and reliability. The internal fuse element is constructed from pure silver, a material chosen for its exceptional electrical conductivity, which is critical for minimizing resistance and power losses. Complementing the silver fuse element, the copper caps are silver-coated. This silver coating significantly enhances corrosion resistance, ensuring long-term performance and reliable contact. The fuse body is made of ceramic, a material that offers superior mechanical strength to withstand operational stresses and excellent dielectric performance, crucial for high-voltage applications. The P1018315 exhibits low power losses, with a power dissipation of 240W when operating at its rated current. Its cold resistance is measured at a low 13 mΩ, further contributing to minimized energy loss and reduced thermal stress within the protected equipment. Physically, the fuse has a length of 292mm and a diameter of 78mm, with a total weight of 3.5kg. Compliance with international standards is a hallmark of the P1018315, as it meets both VDE T402 and IEC specifications. This compliance makes it a suitable and reliable choice for integration into Siemens and Ormazabal gas-insulated switchgear. The Limitor®-PTS range, to which this fuse belongs, is meticulously engineered to provide comprehensive protection for transformers against the severe thermal and dynamic effects of short circuits. It achieves this through controlled power dissipation and a design that prioritizes enhanced safety. The P1018315 is an ideal solution for high-voltage applications where dependable, low-maintenance protection is paramount.
  • Rated voltage: 12kVAC, Rated current: 100A
  • Breaking capacity: 63kA, Power dissipation: 240W at In
  • Thermal striker (80N) prevents overheating in switchgear
  • Fuse-element: pure silver, caps: silver-coated copper, body: ceramic
  • VDE T402 and IEC compliant, compatible with Siemens and Ormazabal switchgear

Specifications

AC Voltage Rating
12 kV
Amperage Rating
100 A
Application
Best used in SF6 insulated switch gear and compact switch gear HV Transformer protection
Body Material
Ceramic
Brand Name
Mersen
Connection
Cylindrical
Connection Material
Silver-Plated Copper
Interrupt Rating
80 kA
Mounting
Clip
Size
14.09 x 3.07 in
Size
358 x 78 mm
Special Features
Low switching voltage Large current ratings range Very low power losses Energy efficency New thermal striker patented by Mersen to prevent overheating Medium striker 80N / 30mm New cap design for a better compatibility with all types of clips and easier assembly Outdoor and indoor use Coordination with IEC 60787, IEC 62271-105 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
Package Dimensions (L x W x H)
14.09 in x 3.07 in x 3.07 in
Package Dimensions (L x W x H)
358 mm x 78 mm x 78 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.

LCC5

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.