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Mersen GSF-V1/2 - Miniature fuse GSF-V - Time-Delay 250VAC 0.5A Size 5x20 Soldered connection
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Mersen GSF-V1/2 Miniature fuse GSF-V - Time-Delay 250VAC 0.5A Size 5x20 Soldered connection

Alternate Item Number: GSF-V1/2

UPC: 782001245177

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Line DrawingSpecification Sheet

Contact for Pricing

Minimum Qty: 10

Multiplier: 10

*Contact for lower quantities*

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

Overview

The **Mersen GSF-V1/2** miniature fuse (SKU: GSF-V1/2) is a 5x20mm ceramic fuse rated for 250VAC and 0.5A, designed for time-delay circuit protection in sensitive electronic applications. Its medium time-lag characteristic (SA/SB) accommodates transient inrush currents while providing reliable overcurrent interruption for semiconductor devices and control circuits. Key specifications include a ceramic body for thermal stability, axial leads for direct soldering to PCBs or terminal blocks, and a compact 5x20mm form factor ideal for space-constrained designs. The fuse’s 0.5A rating targets low-power AC circuits, while its 250VAC voltage rating ensures compatibility with a broad range of industrial and commercial systems. Typical applications include power supplies, telecommunications equipment, industrial control systems, and medical devices where precise fault protection is critical. The GSF-V series is optimized for environments requiring medium time-lag performance to handle brief overloads without nuisance tripping. Mersen’s 5x20mm semiconductor protection fuses are trusted for their consistent operation and durable construction, making them a standard choice for engineers prioritizing reliability in circuit protection design.
  • Voltage rating: 250VAC
  • Current rating: 0.5A
  • Medium time-lag (SA/SB) for transient inrush handling
  • Ceramic body for thermal stability and arc suppression
  • 5x20mm axial leads for direct soldering to PCBs or terminal blocks
  • Part of Mersen’s trusted GSF-V series with decades of reliability
  • Ideal for power supplies, industrial controls, telecommunications, and medical devices
  • Compliant with UL and IEC standards for global applications

Specifications

AC Voltage Rating
250 V
Amperage Rating
0.5 A
Application
Electronic circuits
Brand Name
Mersen
Case
Ceramic
Case Material
Ceramic
Class
Supplemental
Connection
Soldered connection
Mounting
Surface
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
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
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Frequently Asked Questions

What are the available ampere ratings for the GSF-V1/2 fuse?

The GSF-V1/2 fuse is available in ampere ratings from 1/4A to 10A.

What is the maximum voltage rating for these fuses?

These fuses have a maximum voltage rating of 250VAC.

What type of fuse construction does the GSF-V1/2 have?

The GSF-V1/2 fuse features a ceramic body and axial leads.

What is the interrupt rating (I.R.) for the GSF-V1/2 fuses?

The interrupt rating (I.R.) for these fuses is 1500A at 250VAC.

Which standards do the GSF-V1/2 fuses comply with?

These fuses comply with IEC-127-2 Standard Sheet 5 and are UL and CSA Recognized.

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.