Mersen GDG-V1-1/4 - Miniature fuse GDG-V - Time-Delay 250VAC 1.25A Size 5x20 Soldered connection
Mersen

GDG-V1-1/4

Alternate Item Number: GDG-V1-1/4

UPC: 782001760236

Documents & Media
Line Drawing

Contact for Pricing

Minimum Qty: 10

Multiplier: 10

*Contact for lower quantities*

Overview

The Mersen GDG-V1-1/4 miniature fuse is a high-performance, time-delay glass fuse designed for precision protection in sensitive electronic circuits. Part of Mersen’s trusted GDG-V series, this 5x20mm fuse combines robust construction with reliable performance, making it ideal for applications where transient surges must be tolerated without nuisance tripping. Rated at 250VAC and 1.25A, the GDG-V1-1/4 provides a critical balance between fast-acting response and time-delay characteristics, ensuring optimal protection for components vulnerable to inrush currents such as transformers, motors, and capacitive loads. Engineered with axial leads and a soldered connection, this miniature fuse is optimized for through-hole PCB mounting and panel installations where space is at a premium. The glass body offers visual inspection of the fuse element, enabling quick verification of operational status—a feature particularly valuable in industrial control panels, power supplies, and instrumentation systems. Mersen’s proprietary fuse element design ensures consistent performance across voltage and current cycles, reducing the risk of premature failure or false trips in mission-critical applications. Typical applications for the GDG-V1-1/4 include power distribution units, lighting ballasts, telecom equipment, and medical devices, where reliable overcurrent protection is essential. The time-delay characteristic is especially beneficial in circuits with inductive or capacitive loads, allowing brief current surges during startup without compromising safety. Installation is straightforward: simply insert the fuse into the holder or PCB slot and secure with solder. For best results, ensure proper clearance and alignment to avoid mechanical stress on the leads. Mersen, a global leader in electrical protection and thermal management solutions, has manufactured the GDG-V1-1/4 to meet stringent international standards, including IEC 60127. The company’s decades of expertise in fuse technology ensure that every GDG-V series fuse delivers consistent performance, long service life, and compliance with safety regulations. Whether deployed in industrial automation, renewable energy systems, or consumer electronics, the GDG-V1-1/4 miniature fuse provides dependable circuit protection with minimal footprint. Trust Mersen for industrial-grade reliability in a compact, cost-effective package.
  • Rated 250VAC, 1.25A with time-delay characteristics for transient surge tolerance
  • 5x20mm glass body with axial leads and soldered connections for secure mounting
  • Designed for PCB and panel installations in compact electronic systems
  • Visual inspection capability through glass body for quick status verification
  • Manufactured by Mersen to IEC 60127 standards for industrial reliability

Specifications

AC Voltage Rating
250 V
Amperage Rating
1.25 A
Application
Electronic circuits
Brand Name
Mersen
Case
Glass
Case Material
Glass
Class
Supplemental
Connection
Soldered connection
Connection Type
Soldered
Current Rating
1.25 A
Material
Glass
Mounting
Surface
Mounting Type
Through-hole PCB
Series
GDG-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
Glass body Time-delay 5 mm x 20 mm 1-1/2" Axial leads
Standard
1/16A through 10A, 250VAC, UL & CSA Recognized 1/16A through 6-3/10A, 250VAC, SEMKO Approved 1/16A through 6-3/10A, 250VAC, VDE Approved IEC 127-2 Standard Sheet 3
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 GGC-V - Fast-Acting 250VAC 0.063A Size 6,3x32 Soldered connection

GGC-V1/16

Miniature fuse GGC-V - Fast-Acting 250VAC 0.063A Size 6,3x32 Soldered connection
250V PICO FUSE 1.5A. The PICO® II 263 Series Fuse is a specially designed axial leaded fuse that achieves a 250V rating in a small package. Features: Very fast-acting. Small size. Wide current rating range (62mA- 15A). RoHS compliant. Halogen-free available. Wide operating temperature range. Low temperature rerating. 250V rating.

26301.5L

250V PICO FUSE 1.5A. The PICO® II 263 Series Fuse is a specially designed axial leaded fuse that achieves a 250V rating in a small package. Features: Very fast-acting. Small size. Wide current rating range (62mA- 15A). RoHS compliant. Halogen-free available. Wide operating temperature range. Low temperature rerating. 250V rating.

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.