Mersen GSF-V8 - Miniature fuse GSF-V - Time-Delay 250VAC 8A Size 5x20 Soldered connection
Mersen

GSF-V8

Alternate Item Number: GSF-V8

UPC: 782001245290

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Overview

The Mersen GSF-V8 miniature fuse is a high-performance, time-delay ceramic fuse designed for precision protection in industrial and electronic applications. Rated at 250VAC and 8A, this 5x20mm fuse combines robust construction with reliable performance, making it ideal for sensitive equipment where transient surges or inrush currents are common. The time-delay characteristic ensures that brief overloads do not trigger unnecessary interruptions, while the ceramic body provides superior thermal stability and arc resistance—critical for harsh operating environments. With soldered axial leads, the GSF-V8 is engineered for secure, permanent connections in printed circuit boards (PCBs), power supplies, and control panels, ensuring long-term reliability even in vibration-prone installations. Designed for a wide range of applications, the GSF-V8 is particularly well-suited for use in telecommunications infrastructure, industrial automation, motor control systems, and renewable energy installations. Its compact 5x20mm footprint allows for space-efficient integration in densely populated control panels, while the ceramic housing enhances durability against mechanical stress and high temperatures. Mersen, a global leader in electrical protection and power management solutions, has engineered this fuse to meet stringent international standards, ensuring compliance with UL, IEC, and other regulatory requirements. Professionals in electrical engineering and maintenance rely on Mersen’s reputation for quality and innovation when selecting protective components. The GSF-V8’s time-delay feature is especially valuable in applications such as motor starting circuits, transformers, and inductive loads, where temporary current spikes are normal but sustained overloads must be prevented. Installation is straightforward: the fuse is inserted into a compatible fuse holder or directly soldered onto a PCB, with axial leads providing flexibility in mounting orientations. For optimal performance, ensure proper clearance and ventilation around the fuse to dissipate heat effectively. Mersen’s GSF-V series is trusted by engineers worldwide for its consistent performance, long service life, and adherence to strict quality controls. Whether protecting sensitive electronics in a data center or safeguarding critical machinery in a factory, the GSF-V8 delivers dependable overcurrent protection without compromising operational efficiency. With a focus on safety, reliability, and precision, Mersen continues to set the standard for miniature fuses in industrial and commercial applications.
  • Rated for 250VAC and 8A current, ideal for industrial and electronic applications
  • Time-delay design prevents nuisance tripping during transient surges or inrush currents
  • Ceramic body ensures high thermal stability, arc resistance, and mechanical durability
  • 5x20mm compact size with soldered axial leads for secure PCB and panel mounting
  • Compliant with UL, IEC, and other international safety standards for global use

Specifications

AC Voltage Rating
250 V
Amperage Rating
8 A
Application
Electronic circuits
Brand Name
Mersen
Case
Ceramic
Case Material
Ceramic
Class
Supplemental
Connection
Soldered connection
Connection Type
Soldered
Current Rating
8 A
Material
Ceramic
Mounting
Surface
Mounting Type
Axial Leads
Series
GSF-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
5x20 mm
Special Features
Ceramic body Time-delay 5 mm x 20 mm 1-1/2" Axial leads
Standard
1/2A through 8/10A, 250VAC 1A through 6-3/10A, 250VAC, SEMKO, VDE Approved 1A through 10A, 250VAC, UL and CSA Recognized IEC-127-2 Standard Sheet 5
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
Miniature fuse GSD-V - Fast-Acting 250VAC 8A Size 5x20 Soldered connection

GSD-V8

Miniature fuse GSD-V - Fast-Acting 250VAC 8A Size 5x20 Soldered connection
FUSE 250V FA 3AB PB-FREE M-PACK 5A. The 3AB Very Fast-Acting Fuse for protection of Silicon Controlled Rectifiers and similar solid-state devices. Features: Designed to meet UL248-14. RoHS Compliant and Lead-Free. Available in cartridge type only.

0332005.MXP

FUSE 250V FA 3AB PB-FREE M-PACK 5A. The 3AB Very Fast-Acting Fuse for protection of Silicon Controlled Rectifiers and similar solid-state devices. Features: Designed to meet UL248-14. RoHS Compliant and Lead-Free. Available in cartridge type only.

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.