Mersen T078332 - Extremely high breaking capacity fuses: Protection of power semiconductors Complying with standard IEC 60269-1 and -4 600-690VAC voltage rating aR class according to IEC 60269-4 and VDE 636-25 690 Volts 200 Amps 27x60 URQ series.
Mersen

T078332

Alternate Item Number: 3605340029369

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Overview

The Mersen URQ Series 200A fuse (SKU: T078332) delivers ultra-high breaking capacity protection for power semiconductors in demanding industrial applications. Rated for 600-690VAC and 200A, this aR-class fuse (IEC 60269-4, VDE 636-25) is engineered to safeguard sensitive components like diodes, thyristors, and IGBT modules in variable speed drives, UPS systems, and motor control centers. With a tested interrupting rating of 200kA @ 690V and an estimated 300kA, it ensures rapid fault interruption while minimizing let-thru current and energy to protect downstream equipment. The compact 27x60mm dimensions allow integration into space-constrained panels, and the fuse is available with or without blown-fuse indication. Compatible with DIN 43653/00C, BS 88-4, and IEC 60269-1 standards, this fuse provides full-range protection with selective coordination capabilities. Designed for high-performance applications, the T078332 fuse meets stringent IEC 60269-1 and -4 requirements, ensuring compliance with global safety and performance standards. Its aR classification specifically targets semiconductor protection, offering precise fault interruption to prevent catastrophic failure in power electronics. The 690V rating makes it suitable for high-voltage industrial systems, while the 200A continuous current rating supports heavy-duty applications. The URQ Series fuse’s high-speed operation reduces thermal stress on protected components, extending their operational lifespan. Its compatibility with multiple mounting standards (DIN 43653/00C, BS 88-4) enhances versatility across different electrical infrastructures. Whether deployed in renewable energy systems, industrial automation, battery storage, or EV charging infrastructure, this fuse delivers reliable, high-speed protection under severe operational stresses.
  • 690VAC voltage rating with 200A current capacity
  • aR class per IEC 60269-4 and VDE 636-25 for semiconductor protection
  • Tested interrupting rating: 200kA @ 690V (estimated 300kA)
  • Compact 27x60mm dimensions for space-constrained installations
  • Available with or without blown-fuse indication (DIN 43653/00C compliant)

Specifications

Amperage Rating
200 A
Application
Protection of inverters, motor drives, UPS systems and similar 690V or less equipments.
Brand Name
Ferraz Shawmut
Current Rating
200 A
Series
URQ
Size
27x60
Size
27x60 mm
Special Features
aR Class according to IEC 60269-4 and VDE 636-23 Very low I²t for improved semiconductor protection Ultra fast acting Superior cycling capability
Sub Brand
Protistor
Type
IEC High-Speed Cylindrical Fuse-Links AC Protection
Voltage Rating
690 VAC
Voltage Rating
600-690 VAC
Package Dimensions (L x W x H)
2.36 IN x 1.06 IN x 1.06 IN
Package Dimensions (L x W x H)
5.9944 cm x 2.6924 cm x 2.6924 cm
Package Weight (Imperial)
0.180 L
Package Weight (Metric)
0.082 kg
Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount

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Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20

C331156

Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8

1SCM8

Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8
Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
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.