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Mersen W081439 - High-Speed Cylindrical Fuse Protistor® Size 36x250 gR (gRB) 2000VDC IEC 40A

Mersen W081439 High-Speed Cylindrical Fuse Protistor® Size 36x250 gR (gRB) 2000VDC IEC 40A

Alternate Item Number: FD36GB200V40


Documents & Media
Specification Sheet

Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The Mersen W081439 Protistor® is a high-speed cylindrical fuse-link designed for critical 2000VDC applications requiring fast-acting overcurrent protection. This IEC size 36x250 gR (gRB) fuse delivers a 40A current rating with a 2000VDC voltage rating, making it ideal for high-voltage DC systems such as railway power circuits and auxiliary systems. Engineered for semiconductor protection, it features significantly lower I²t values (3790 A²s pre-arcing, 16200 A²s clearing) compared to standard fuses, reducing damage to sensitive components during short-circuit events. The W081439 operates efficiently at elevated temperatures while maintaining low power dissipation (515W at rated current), contributing to extended system operational life. Manufactured in the US, this fuse complies with IEC standards and is optimized for applications demanding rapid response and high reliability. Key specifications include a 2000VDC rating, 40A current, 36x250 size, and a rated breaking capacity of 130kA.
  • 2000VDC voltage rating with 40A current capacity
  • IEC size 36x250 gR (gRB) cylindrical fuse-link
  • Low I²t values (3790 A²s pre-arcing, 16200 A²s clearing) for semiconductor protection
  • Rated breaking capacity of 130kA for high fault current handling
  • Low power dissipation (515W at rated current) for energy efficiency

Specifications

Amperage Rating
40 A
Brand Name
Mersen
Case
Ceramic
Connection
Ferrule
Current Rating
40A
DC Voltage Rating
2000 V
Mounting
Clip
Series
Protistor®
Size
9.84 x 1.42 in
Size
250 x 36 mm
Size
36x250
Sub Brand
Protistor®
Type
IEC High-Speed Cylindrical Fuse-Links DC Protection
Voltage Rating
2000 V
Wattage
33.6 W
Package Dimensions (L x W x H)
9.84 in x 1.42 in x 1.42 in
Package Dimensions (L x W x H)
250 mm x 36 mm x 36 mm
Package Weight (Imperial)
1.345 lb
Package Weight (Metric)
0.610 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.

Frequently Asked Questions

What is the voltage rating for these DC fuses?

These DC fuses have a voltage rating of 2000 V DC.

What is the breaking capacity of the 2000V DC fuses?

The breaking capacity for these fuses is 30 kA at 2000 V DC.

What is the available current rating range for gRB fuses?

The gRB fuses are available in current ratings from 0.8 A to 40 A.

What are the dimensions of these DC ferrule fuses?

The dimensions of these DC ferrule fuses are 36x250.

What is the maximum permissible L/R time constant at 2000V DC?

The maximum permissible L/R time constant at 2000V DC is 15 ms.

What is the trip force for these fuses?

The trip force for these fuses is 15 N at 20 mm.

What is the minimum trip indicator operating voltage?

The minimum trip indicator operating voltage is 90 V.

What is the AC voltage rating and breaking capacity?

The maximum AC voltage rating is 3000 V with a breaking capacity of 50 kA.

What is the weight of the CC 2000 CP gRB 36x250/40 fuse?

The weight of the CC 2000 CP gRB 36x250/40 fuse is 667 g.

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.