Mersen T302076 - Square Body High-Speed Fuse Protistor® Size 70 gR 600VDC IEC 650VDC UL 100A With Striker Flush ends metric threads
Mersen

T302076

Alternate Item Number: D70GB60V100TF


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Overview

The Mersen T302076 Protistor® high-speed fuse-link (SKU T302076) delivers precise semiconductor protection in power conversion systems. Engineered for diodes, thyristors, GTOs, and IGBTs, this square-body fuse-link features a 100A current rating with 600VDC (IEC) and 650VDC (UL) compatibility. Its pure silver fuse elements, embedded in solidified sand, ensure controlled arcing and a low I²t value for superior fault interruption. The 100 kA interrupting rating provides robust protection against catastrophic failures in high-energy circuits. Designed for flexibility, the T302076 includes flush ends with metric threads for secure mounting and non-magnetic hardware for enhanced reliability. All contact surfaces are silver-plated to minimize resistance and improve thermal performance. The optional low-voltage trip-indicator enables field-mountable microswitch activation for real-time system monitoring and safety compliance. Ideal for industrial power supplies, motor drives, and renewable energy inverters, this fuse-link meets stringent IEC 650VDC and UL standards. Its compact Size 70 gR footprint optimizes panel space while maintaining high-performance protection. Trust Mersen’s Protistor® series for semiconductor-grade reliability in demanding applications.
  • 100A rated current with 600VDC (IEC) / 650VDC (UL) compatibility
  • Square body design with flush ends and metric threads for secure mounting
  • Pure silver fuse elements for controlled arcing and low I²t values
  • 100 kA interrupting rating for high-energy fault protection
  • Optional striker for trip-indicator activation and system monitoring

Specifications

Amperage Rating
100 A
Application
Protection of inverters, motor drives, UPS systems and similar 600V or less equipments.
Brand Name
Mersen
Case
Ceramic
Connection
End Contact with Threaded Holes
Connection Type
Flush ends metric threads
Current Rating
100A
DC Voltage Rating
650 V
Material
Silver
Mounting
Bolted
Mounting Type
Square Body
Series
Protistor®
Size
Size 70
Size
2.91 x 1.54 x 1.81 in
Size
74 x 39 x 46 mm
Special Features
Multiple body sizes and terminals or blades combination gR Class according to IEC 60269-4 and VDE 636-23 Low I²t for improved semiconductor protection Extremely fast acting Eliminate all overloads Excellent cycling capability
Standard
IEC 60269-4 Compliance UL/CSA Recognized E76491 CCC GB 1359.4
Sub Brand
Protistor®
Type
Square Body High-Speed Fuse-Links DC Protection
Type Of Indicators
Striker
Voltage Rating
650 V
Voltage Rating
600VDC
Wattage
23 W
Package Dimensions (L x W x H)
2.91 in x 1.54 in x 1.81 in
Package Dimensions (L x W x H)
74 mm x 39 mm x 46 mm
Package Weight (Imperial)
0.747 lb
Package Weight (Metric)
0.339 kg
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9F61 Size B Clips 1.6in

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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.

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.