Mersen GSF-V4/10 - Miniature fuse GSF-V - Time-Delay 250VAC 0.4A Size 5x20 Soldered connection
Mersen

GSF-V4/10

Alternate Item Number: GSF-V4/10

UPC: 782001245160

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Multiplier: 10

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Overview

The Mersen GSF-V4/10 miniature fuse is a high-performance, time-delay ceramic fuse designed for precision protection in sensitive electronic and industrial applications. Engineered with a 250VAC rating and a 0.4A current rating, this fuse is ideal for circuits requiring reliable overcurrent protection without nuisance tripping. The GSF-V4/10 features a 5x20mm cylindrical body, making it compatible with standard fuse holders and panels, while its axial leads facilitate easy soldered connections for permanent installations. As part of Mersen’s renowned GSF-V series, this fuse combines robust ceramic construction with time-delay characteristics to handle moderate inrush currents common in power supplies, transformers, and motor-driven equipment. The ceramic body ensures superior thermal stability and arc suppression, critical for high-reliability applications in industrial automation, telecommunications, and renewable energy systems. Its compact design allows for space-efficient mounting in densely populated control panels, while the soldered connection ensures a secure, low-resistance electrical interface. Professionals across industries such as electronics manufacturing, HVAC systems, and automotive electronics rely on Mersen’s GSF-V series for consistent performance under demanding conditions. The time-delay feature is particularly valuable in applications where brief current surges—such as capacitor charging or motor startup—must not trigger unnecessary fuse blowouts. This fuse is UL and IEC certified, meeting stringent safety standards for global deployment. Installation is straightforward: the GSF-V4/10 is designed for direct soldering into circuit boards or fuse holders, with axial leads providing flexibility for both vertical and horizontal mounting. Mersen’s reputation for engineering excellence ensures that this fuse delivers predictable response times and long-term durability, even in harsh environments. Whether protecting delicate semiconductors or heavy-duty industrial machinery, the GSF-V4/10 provides a cost-effective solution backed by decades of expertise in fuse technology. For engineers and procurement specialists seeking a trusted miniature fuse with time-delay functionality, the Mersen GSF-V4/10 stands out as a top-tier choice. Its combination of compact size, high voltage rating, and ceramic construction makes it a versatile component for modern electronic protection schemes. Trust Mersen—an industry leader since 1926—to deliver the reliability your applications demand.
  • 250VAC rated for high-voltage circuit protection
  • 0.4A current rating with time-delay characteristics for inrush tolerance
  • Ceramic body for superior thermal stability and arc suppression
  • 5x20mm compact size with axial leads for soldered connections
  • UL and IEC certified for global compliance and reliability

Specifications

AC Voltage Rating
250 V
Amperage Rating
0.4 A
Application
Electronic circuits
Brand Name
Mersen
Case
Ceramic
Case Material
Ceramic
Class
Supplemental
Connection
Soldered connection
Connection Type
Soldered
Current Rating
0.4A
Material
Ceramic
Mounting
Surface
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
5x20mm
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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GSD-V8/10

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GSF-V8/10

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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.