Mersen D076823 - High-Speed Cylindrical Fuse Protistor® Size 27x60 aR 690VAC IEC 125A With Striker
Mersen

D076823

Alternate Item Number: FR27UD69V125T


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Specification Sheet

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Overview

The Mersen D076823 Protistor® Size 27x60 aR high-speed fuse is engineered for semiconductor protection in industrial power systems. Rated at 690VAC and 125A, this IEC 60269-1 and IEC 60269-4 compliant fuse delivers exceptional breaking capacity with a rated breaking current of 200kA. The aR class design ensures rapid response to fault conditions, minimizing damage to sensitive power electronics. With a pre-arcing I²t of 3.425 kA²s and clearing I²t of 13.6 kA²s, it provides precise fault interruption for applications requiring high-speed protection. The integrated striker mechanism enables remote indication of fuse operation, enhancing system monitoring and maintenance efficiency. Designed for compact installations, this fuse measures 27x60mm and weighs 80g, making it ideal for space-constrained environments. Compatible with Mersen Protistor® fuse holders and accessories, the D076823 ensures reliable performance in variable frequency drives, motor controllers, and renewable energy inverters.
  • Rated 690VAC, 125A with 200kA breaking capacity per IEC 60269-4
  • aR class design for semiconductor and power electronic protection
  • Pre-arcing I²t: 3.425 kA²s, Clearing I²t: 13.6 kA²s
  • Integrated striker mechanism for remote fault indication
  • Compact 27x60mm size, 80g weight, US-manufactured

Specifications

AC Voltage Rating
690 V
Amperage Rating
125 A
Application
Protection of power semiconductors
Brand Name
Mersen
Case
Ceramic
Connection
Ferrule
Current Rating
125A
Mounting
Clip
Series
Protistor®
Size
27x60
Size
2.37 x 1.06 in
Size
60.3 x 27 mm
Special Features
Extremely breaking capacity rating fuses
Standard
VDE 636-23 IEC 60269.1 IEC 60269.4
Sub Brand
Protistor®
Type
IEC High-Speed Cylindrical Fuse-Links AC Protection
Type Of Indicators
Striker
Voltage Rating
690 V
Wattage
29.9 W
Package Dimensions (L x W x H)
2.37 in x 1.06 in x 1.06 in
Package Dimensions (L x W x H)
60.3 mm x 27 mm x 27 mm
Package Weight (Imperial)
0.176 lb
Package Weight (Metric)
0.080 kg
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Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

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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.
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in

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.