Mersen Y209367 - High Voltage DIN Back-up fuse for Transformer Limitor® VDE T402 36kVAC IEC 31.5A d65mm, L537mm With Striker 80N
Mersen

Y209367

Alternate Item Number: 45DB360V32PD

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Overview

The Mersen Limitor®-PD VDE T402 High Voltage DIN Back-up Fuse (SKU: Y209367) is a precision-engineered solution for transformer protection in high-voltage switchgear and controlgear systems. Rated at 36kVAC with a continuous current of 31.5A, this fuse is designed to interrupt short-circuit currents up to 63kA, ensuring reliable operation in demanding industrial environments. The fuse features a 65mm diameter ceramic body with a 537mm length, incorporating a 80N striker for visual or remote indication of fault conditions. Key specifications include a clearing I²t of 7kA²s at rated voltage, a breaking capacity of 63kA, and a cold resistance of 30mΩ. Power dissipation at nominal current is 39W, with a maximum weight of 2.2kg. The fuse elements are constructed from pure silver for superior conductivity and thermal stability, while the copper caps are silver-coated to enhance corrosion resistance and electrical performance. Certified to IEC 60282-1 and VDE 0670 T402 standards, this back-up fuse is specifically engineered for transformer protection, safeguarding against the damaging effects of short-circuit currents. Its compact DIN-compliant design ensures compatibility with standard high-voltage switchgear, making it an ideal choice for utility, industrial, and commercial applications where reliability and precision are critical. Mersen’s commitment to quality is evident in every component, from the ceramic body’s thermal shock resistance to the silver fuse elements’ long-term stability. This fuse is manufactured in the US and distributed by Gross Automation, providing local support and expertise for seamless integration into your power distribution system.
  • Rated voltage: 36kVAC (IEC 60282-1, VDE 0670 T402 compliant)
  • Continuous current: 31.5A with 80N striker for fault indication
  • Breaking capacity: 63kA, clearing I²t: 7kA²s at rated voltage
  • Ceramic body (65mm diameter, 537mm length) with silver fuse elements
  • Power dissipation: 39W, cold resistance: 30mΩ, weight: 2.2kg

Specifications

AC Voltage Rating
36 kV
Amperage Rating
31.5 A
Application
HV Transformer protection
Body Material
Ceramic
Brand Name
Mersen
Connection
Cylindrical
Connection Material
Silver-Plated Copper
Current Rating
31.5A
Interrupt Rating
20 kA
Material
Pure silver, copper coated with silver, ceramic
Mounting
Clip
Series
Limitor®-PD
Size
d65mm, L537mm
Size
23.74 x 2.56 in
Size
603 x 65 mm
Special Features
High breaking capacity High current limitation Low switching voltage Quick breaking medium striker 80N/30mm 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 Indoor and outdoor applications
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
36kVAC
Package Dimensions (L x W x H)
23.74 in x 2.56 in x 2.56 in
Package Dimensions (L x W x H)
603 mm x 65 mm x 65 mm
Package Weight (Imperial)
8.157 lb
Package Weight (Metric)
3.700 kg

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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.