Mersen GSB-V2 - Miniature fuse GSB-V - Fast-Acting 250VAC 2A Size 5x20 Soldered connection
Mersen

GSB-V2

Alternate Item Number: GSB-V2

UPC: 782001780142

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Overview

The Mersen GSB-V2 miniature fuse is a high-performance, fast-acting protection device engineered for precision circuit safeguarding in compact electronic systems. Designed with a 5x20mm glass body and axial soldered leads, this fuse delivers reliable overcurrent protection at 250VAC and 2A, making it ideal for applications where space is at a premium and reliability is critical. As part of Mersen’s trusted GSB-V series, the GSB-V2 combines robust construction with fast response characteristics to interrupt fault currents quickly, preventing damage to sensitive components and ensuring system uptime. Miniature fuses like the GSB-V2 are essential in modern electronics, where compact form factors and high power densities demand protection solutions that are both effective and space-efficient. The 5x20mm size is a standard in the industry, widely adopted across consumer electronics, industrial control systems, telecommunications equipment, and automotive applications. Its fast-acting nature ensures rapid response to overcurrent events, minimizing the risk of catastrophic failure in critical circuits such as power supplies, motor drives, and signal processing units. Mersen, a global leader in electrical protection and thermal management solutions, has designed the GSB-V2 to meet the rigorous demands of engineers and technicians who require dependable performance without compromise. The soldered connection ensures a secure, low-resistance interface, reducing the risk of intermittent failures or poor conductivity that can plague other connection types. This makes the GSB-V2 particularly well-suited for high-vibration environments or applications where mechanical stress is a concern. When selecting a miniature fuse for your application, consider the operating environment, fault current levels, and regulatory compliance requirements. The GSB-V2’s 250VAC rating makes it suitable for both low-voltage and mains-powered systems, while its fast-acting response aligns with standards such as UL 248 and IEC 60127. Installation is straightforward, with axial leads allowing for easy soldering onto PCBs or through-hole mounting in chassis systems. For added peace of mind, Mersen’s fuses undergo rigorous testing to ensure consistent performance across temperature ranges and operational lifetimes. Whether you’re protecting a power supply in a medical device, a control circuit in an industrial automation system, or a sensor array in a telecommunications hub, the Mersen GSB-V2 miniature fuse delivers the reliability and precision required for mission-critical applications. Trusted by engineers worldwide, Mersen’s GSB-V series is a benchmark for miniature fuse performance, offering a blend of speed, durability, and compatibility that few competitors can match. Choose the GSB-V2 for your next design and experience the difference that comes with Mersen’s commitment to innovation and quality.
  • 250VAC voltage rating for mains and low-voltage applications
  • 2A current rating with fast-acting response for rapid fault interruption
  • 5x20mm glass body with axial soldered leads for secure PCB mounting
  • Part of Mersen’s trusted GSB-V series, engineered for reliability
  • Ideal for consumer electronics, industrial controls, and automotive systems

Specifications

AC Voltage Rating
250 V
Amperage Rating
2 A
Application
Electronic circuits
Brand Name
Mersen
Case
Glass
Case Material
Glass
Class
Supplemental
Connection
Soldered connection
Connection Type
Soldered
Current Rating
2A
Material
Glass
Mounting
Surface
Series
GSB-V
Size
3.83 x 0.2 in
Size
97.282 x 5.08 mm
Size
3.83 x 0.2;97.282 x 5.08 in;mm
Size
5x20mm
Special Features
Glass body Fast-acting 5 mm x 20 mm 1-1/2" Axial leads
Standard
1/2A through 10A, 250VAC, UL and CSA Recognized 1/2A through 6-3/10A, 250VAC, SEMKO Approved 1/2A through 6-3/10A, 250VAC, VDE Approved IEC-127-2 Standard Sheet 2
Type
5x20mm
Voltage Rating
250 VAC
Package Dimensions (L x W x H)
3.83 in x 0.2 in x 0.2 in
Package Dimensions (L x W x H)
97.282 mm x 5.08 mm x 5.08 mm
Package Weight (Imperial)
0.010 lb
Package Weight (Metric)
0.005 kg
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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.