Mersen W1018551 - High-Speed Cylindrical Fuse Protistor® Size 22x58 gR 690VAC IEC 12A
Mersen

W1018551

Alternate Item Number: FR22GR69V12


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Specification Sheet

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Minimum Qty: 10

Multiplier: 10

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Overview

The Mersen W1018551 is a high-speed cylindrical fuse-link from the Protistor® series, specifically designed for the protection of power semiconductors. This fuse complies with IEC 60269-1 and -4 standards, offering a robust solution for critical applications. It features a gR classification, indicating its suitability for semiconductor protection. Key specifications include a rated voltage of 690VAC (IEC) and a current rating of 12A. The fuse boasts an impressive pre-arcing I²t of 5.4 A²s and a clearing I²t of 60 A²s at its rated voltage. With a rated breaking capacity of 160 kA AC, it provides substantial protection against short circuits. The power dissipation at its nominal current is 4.4 W. This model is size 22x58mm and is supplied in a package of 10, weighing 60g per unit. The Protistor® series is engineered for fast-acting protection, minimizing damage to sensitive electronic components. This particular model, SKU W1018551, is manufactured by Mersen and is made in the US. It is designed for AC protection circuits where rapid fault interruption is paramount.
  • Mersen Protistor® size 22x58 gR fuse
  • Rated Voltage: 690VAC (IEC)
  • Current Rating: 12A
  • High Breaking Capacity: 160 kA AC
  • Fast-acting protection for power semiconductors

Specifications

AC Voltage Rating
690 V
Amperage Rating
12 A
Brand Name
Mersen
Case
Ceramic
Connection
Ferrule
Current Rating
12 A
Mounting
Clip
Series
Protistor®
Size
22x58
Size
2.28 x 0.87 in
Size
58 x 22.2 mm
Special Features
IEC standard 60269-4 compliant UL 248-13 compliant gR class Clearing all overloads Improved safety and protection Enabling selective coordination among all Distribution circuit fuses With or without trip-indicator
Standard
IEC 60269-4 UL recognized UL 248-13 CCC GB 1539.4 RoHS compliant
Sub Brand
Protistor®
Type
IEC High-Speed Cylindrical Fuse-Links AC Protection
Voltage Rating
690 V
Wattage
4.4 W
Package Dimensions (L x W x H)
2.28 in x 0.87 in x 0.87 in
Package Dimensions (L x W x H)
58 mm x 22.2 mm x 22.2 mm
Package Weight (Imperial)
0.132 lb
Package Weight (Metric)
0.060 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.

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

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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.