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Mersen GDG1 - Miniature fuse GDG - Time-Delay 250VAC 1A Size 5x20 Ferrule
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Mersen GDG1 Miniature fuse GDG - Time-Delay 250VAC 1A Size 5x20 Ferrule

Alternate Item Number: GDG1

UPC: 782001764401


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Overview

The Mersen GDG1 (SKU: GDG1) is a 1 Ampere, 250VAC miniature time-delay fuse with a 5x20mm glass ferrule body, designed for precise electronic and industrial circuit protection. This fuse tolerates temporary inrush currents during equipment startup or normal operation while reliably interrupting sustained overcurrents and short circuits. Its time-delay characteristic prevents nuisance tripping in applications with brief current surges, such as power supplies, control circuits, motors, transformers, and capacitive loads. The GDG1 meets IEC 127-2 Standard Sheet 3 and is UL & CSA Recognized for 1/16A through 10A ratings at 250VAC, ensuring broad compatibility across multiple current levels. The 5x20mm size ensures compatibility with standard fuse holders, including midget, PC mount, and miniature configurations, making it suitable for compact and space-constrained designs. Mersen’s glass ferrule construction provides reliable performance in electronic protection applications where precise current ratings and voltage compatibility are critical, offering a durable and efficient solution for sensitive equipment.
  • 1 Ampere, 250VAC rating with time-delay characteristic
  • 5x20mm glass ferrule body for electronic and industrial protection
  • Tolerates temporary inrush currents to prevent nuisance tripping
  • Compatible with midget, PC mount, and miniature fuse holders
  • UL & CSA Recognized

Specifications

AC Voltage Rating
250 V
Amperage Rating
1 A
Application
Electronic circuits
Brand Name
Mersen
Case
Glass
Case Material
Glass
Class
Supplemental
Connection
Ferrule
Connection Type
Ferrule
Current Rating
1 A
Material
Glass
Mounting
Clip
Series
GDG
Size
0.79 x 0.2 in
Size
20.066 x 5.08 mm
Size
0.79 x 0.2;20.066 x 5.08 in;mm
Size
5x20mm
Size
5x20 mm
Special Features
Glass body Time-delay 5 mm x 20 mm
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)
0.79 in x 0.2 in x 0.2 in
Package Dimensions (L x W x H)
20.066 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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Miniature fuse GGM - Fast-Acting 250VAC 1A Size 5x20 Ferrule
SLO-BLO GLASS AXIAL V-PACK 1A. The 3AG Slo-Blo® fuse solves a broad range of application requirements while offering reliable performance and costeffective circuit protection. Features: 313 and 315 series fuses have time-delayed in the overload range, which provides superior protection inductive loads such as motors, transformers, and solenoids. 3AG indicating fuses instantly identify themselves upon opening by showing a discoloration of their glass bodies. Guesswork and time-consuming circuit testing is eliminated. This unique design offers the same quality performance characteristics as the standard 3AG fuse design.

0313001.VXIDP

SLO-BLO GLASS AXIAL V-PACK 1A. The 3AG Slo-Blo® fuse solves a broad range of application requirements while offering reliable performance and costeffective circuit protection. Features: 313 and 315 series fuses have time-delayed in the overload range, which provides superior protection inductive loads such as motors, transformers, and solenoids. 3AG indicating fuses instantly identify themselves upon opening by showing a discoloration of their glass bodies. Guesswork and time-consuming circuit testing is eliminated. This unique design offers the same quality performance characteristics as the standard 3AG fuse design.
Miniature fuse GDG - Time-Delay 250VAC 1.6A Size 5x20 Ferrule

GDG1-6/10

Miniature fuse GDG - Time-Delay 250VAC 1.6A Size 5x20 Ferrule
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GDL10

Miniature fuse GDL - Time-Delay 125VAC 10A Size 6,3x32 Ferrule
Miniature fuse GDG - Time-Delay 250VAC 2A Size 5x20 Ferrule

GDG2

Miniature fuse GDG - Time-Delay 250VAC 2A Size 5x20 Ferrule
Miniature fuse GDG - Time-Delay 250VAC 2.5A Size 5x20 Ferrule

GDG2-1/2

Miniature fuse GDG - Time-Delay 250VAC 2.5A Size 5x20 Ferrule
Miniature fuse GSC-V - Time-Delay 250VAC 0.5A Size 5x20 Soldered connection

GSC-V1/2

Miniature fuse GSC-V - Time-Delay 250VAC 0.5A Size 5x20 Soldered connection
Miniature fuse GGC-V - Fast-Acting 250VAC 0.2A Size 6,3x32 Soldered connection

GGC-V2/10

Miniature fuse GGC-V - Fast-Acting 250VAC 0.2A Size 6,3x32 Soldered connection

Frequently Asked Questions

What is the voltage rating of the GDG1 fuse?

The GDG1 fuse has a 250VAC voltage rating.

What is the current rating of the GDG1 fuse?

The GDG1 fuse is rated for 1 Ampere.

What are the dimensions of the GDG1 fuse?

The GDG1 fuse measures 5mm in diameter and 20mm in length.

Is the GDG1 fuse time-delay or fast-acting?

The GDG1 fuse features a time-delay characteristic to handle temporary inrush currents.

What standards does the GDG1 fuse comply with?

The GDG1 fuse complies with IEC 127-2 Standard Sheet 3 and is UL & CSA Recognized.

What applications is the GDG1 fuse suitable for?

The GDG1 fuse is suitable for protecting power supplies, control circuits, motors, transformers, and capacitive loads.

Does the GDG1 fuse have axial leads?

The standard GDG1 fuse does not include axial leads; the GDG-V variant offers 1-1/2" axial leads.

What fuse holder types are compatible with the GDG1?

The GDG1 is compatible with midget, PC mount, and miniature fuse holders.

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.