Mersen GGM1 - Miniature fuse GGM - Fast-Acting 250VAC 1A Size 5x20 Ferrule
Mersen

GGM1

Alternate Item Number: GGM1

UPC: 782001762117


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Overview

The Mersen GGM1 Miniature Fast-Acting Fuse (SKU: GGM1) is a 5x20mm glass-body fuse designed for precise overcurrent protection in low-voltage industrial and commercial applications. Rated at 250VAC and 1A, this ferrule-type fuse provides fast-acting response to interrupt fault currents up to 200A interrupting rating (I.R.) at 250VAC, ensuring downstream components remain undamaged. The glass body enables visual status indication for quick troubleshooting, while the ferrule terminals ensure secure mounting in standard fuse holders, reducing connection-related failures. UL Listed and CSA Certified for North American electrical code compliance, the GGM1 is ideal for protecting sensitive electronics in power supplies, industrial controls, telecommunications equipment, and instrumentation. Compatible with DIN-rail mounting systems and most 5x20mm fuse blocks, this fuse combines compact dimensions (5x20mm) with robust construction for reliable performance in demanding environments. Mersen’s century-long expertise in electrical protection solutions underpins the GGM1’s reputation for durability and precision.
  • 5x20mm glass-body fuse with ferrule terminals for secure mounting
  • Fast-acting response interrupts fault currents up to 200A I.R. at 250VAC
  • Rated 250VAC, 1A for low-voltage industrial and commercial applications
  • UL Listed and CSA Certified for North American electrical code compliance
  • Visual status indication via glass body for quick troubleshooting

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
Mounting
Clip
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
Special Features
Glass body Fast-acting 5 mm x 20 mm
Standard
1/16A through 3A, 250VAC, UL Listed and CSA Certified 4A through 8A, 125VAC, UL Listed and CSA Certified 10A and 15A, 250VAC, UL Recognized
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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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.