Mersen W097171 - British Standard fuse-link Protistor® 36x55 aR 690VAC URGL IEC 250A
Mersen

W097171

Alternate Item Number: BS36UL69V250


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Specification Sheet

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Overview

The Mersen Protistor® W097171 is a high-performance British Standard fuse-link designed for extreme reliability in power semiconductor protection. This aR class fuse operates at 690V AC and delivers a 250A current rating, making it ideal for demanding industrial applications. Engineered to IEC 60269-1 and -4 standards, it ensures compliance with BS 88-4 and VDE 636-23, providing certified protection for sensitive power electronics. The 36x55mm cylindrical design without an indicator offers a compact footprint while maintaining an interrupting rating of 200kA at 690V, ensuring robust fault current handling. With a melting I²t of 1180A²s and total clearing I²t of 6700A²s, it meets the rigorous demands of semiconductor circuits. Certified for use in high-speed fuse applications, this fuse-link is manufactured in the US and distributed by Mersen, a leader in electrical protection solutions. Suitable for applications requiring precise fault interruption and minimal power dissipation of 22.8W at rated current.
  • 690V AC voltage rating for industrial power systems
  • 250A current rating with 200kA interrupting capacity
  • aR class compliance per IEC 60269-4 and BS 88-4
  • Compact 36x55mm cylindrical design without indicator
  • Melting I²t: 1180A²s, Total clearing I²t: 6700A²s

Specifications

AC Voltage Rating
690 V
Amperage Rating
250 A
Brand Name
Mersen
Case
Ceramic
Mounting
Bolted
Size
3.23 x 1.56 in
Size
82 x 39.7 mm
Sub Brand
Protistor®
Type
British Standard High-Speed Fuse-Links AC Protection
Voltage Rating
690 V
Wattage
34.5 W
Package Dimensions (L x W x H)
3.23 in x 1.56 in x 1.56 in
Package Dimensions (L x W x H)
82 mm x 39.7 mm x 39.7 mm
Package Weight (Imperial)
0.476 lb
Package Weight (Metric)
0.216 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.

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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.

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.