Mersen GSD-V1-1/4 - Miniature fuse GSD-V - Fast-Acting 250VAC 1.25A Size 5x20 Soldered connection
Mersen

GSD-V1-1/4

Alternate Item Number: GSD-V1-1/4

UPC: 782001244859

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Minimum Qty: 10

Multiplier: 10

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Overview

The Mersen GSD-V1-1/4 miniature fuse is a high-performance, fast-acting protection device engineered for precision applications where reliable overcurrent interruption is critical. Designed to meet the demanding requirements of modern industrial, commercial, and residential electrical systems, this 5x20mm ceramic fuse provides robust protection at 250VAC with a rated current of 1.25A. Its fast-acting response ensures rapid disconnection during fault conditions, minimizing damage to sensitive equipment and reducing downtime in critical operations. Engineered for versatility, the GSD-V1-1/4 is ideal for applications across multiple industries, including telecommunications, power supplies, instrumentation, and control panels. Its compact 5x20mm cylindrical body with axial leads is optimized for high-density circuit designs, making it a preferred choice for space-constrained installations. The soldered connection design ensures secure and stable electrical contact, reducing the risk of intermittent failures or poor conductivity that can plague other fuse types. Mersen’s reputation for manufacturing high-quality electrical protection components is well-established, with decades of expertise in developing solutions that meet international safety standards. The GSD-V1-1/4 is no exception, featuring a ceramic body that offers superior thermal stability and mechanical strength compared to glass or plastic alternatives. This makes it particularly suitable for environments with elevated temperatures or mechanical stress, such as industrial machinery, automotive systems, and renewable energy installations. Professionals in electrical engineering and maintenance rely on Mersen’s GSD-V1-1/4 for its consistent performance and compliance with key industry certifications. Whether used in primary protection circuits, secondary protection stages, or as a backup to larger fuses, this miniature fuse delivers dependable operation under varying load conditions. Its fast-acting characteristic is especially valuable in applications where even brief overcurrents could compromise system integrity, such as in semiconductor manufacturing, medical devices, or data center power distribution. Installation of the GSD-V1-1/4 is straightforward, with axial leads designed for easy insertion into fuse holders or PCBs. The 1.25A rating makes it suitable for protecting low-power circuits, signal lines, and control systems where precise current limiting is essential. When selecting a fuse for your application, consider factors such as ambient temperature, inrush current, and voltage spikes—Mersen’s technical documentation provides detailed guidance to ensure optimal fuse selection and system reliability. For engineers and procurement specialists seeking a trusted, high-quality miniature fuse, the Mersen GSD-V1-1/4 stands out as a cost-effective solution without compromising on performance or safety. Its combination of fast-acting protection, durable construction, and broad application compatibility makes it a staple in electrical protection toolkits worldwide. Trust Mersen’s legacy of innovation to safeguard your critical systems with the GSD-V1-1/4 miniature fuse.
  • 250VAC rated voltage for broad application compatibility
  • 1.25A fast-acting fuse for rapid overcurrent protection
  • Ceramic body for superior thermal and mechanical durability
  • 5x20mm compact size with axial leads for high-density designs
  • Soldered connection ensures stable electrical contact

Specifications

AC Voltage Rating
250 V
Amperage Rating
1.25 A
Application
Electronic circuits
Brand Name
Mersen
Case
Ceramic
Case Material
Ceramic
Class
Supplemental
Connection
Soldered connection
Connection Type
Soldered Leads
Current Rating
1.25 A
Material
Ceramic
Mounting
Surface
Series
GSD-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 Fast-acting 5 mm x 20 mm 1-1/2" Axial leads
Standard
4/10A through 10A, 250VAC, UL & CSA Recognized 1A through 6-3/10A, 250 VAC, SEMKO Approved 1A through 6-3/10A, 250 VAC, VDE Approved IEC 127-2 Standard Sheet 1
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.