Mersen GGA1/2 - Miniature fuse GGA - Time-Delay 250VAC 0.5A Size 5x20 Ferrule
Mersen

GGA1/2

Alternate Item Number: GGA1/2

UPC: 782001810061

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Minimum Qty: 5

Multiplier: 5

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Overview

The Mersen GGA1/2 miniature fuse is a high-performance, time-delay protection device engineered for sensitive electronic and electrical systems requiring reliable overcurrent safeguards. Designed with a 5x20mm glass ferrule construction, this fuse delivers robust performance in compact applications where space and precision are critical. Rated at 250VAC and 0.5A, the GGA1/2 is ideal for protecting low-current circuits against transient overloads while ensuring continuous operation during harmless inrush currents—common in motors, transformers, and capacitive loads. Mersen, a global leader in electrical protection solutions, manufactures the GGA1/2 to meet stringent international standards, ensuring consistent performance across industrial, commercial, and residential applications. The time-delay characteristic of this fuse allows it to withstand brief current surges without nuisance tripping, making it particularly suitable for applications such as power supplies, control circuits, and instrumentation where momentary overloads are expected. The glass body provides visual indication of fuse status, enabling quick diagnostics during maintenance or troubleshooting. Typical applications for the Mersen GGA1/2 include: - **Industrial automation:** Protecting PLCs, sensors, and control panels from transient faults. - **Telecommunications:** Safeguarding power distribution units in data centers and network infrastructure. - **Medical equipment:** Ensuring patient safety in diagnostic and therapeutic devices by preventing overcurrent conditions. - **Lighting systems:** Providing reliable protection for LED drivers, ballasts, and dimming circuits. - **Consumer electronics:** Shielding low-power circuits in appliances, chargers, and smart devices. Selecting the right fuse involves considering voltage rating, current rating, and response time. The GGA1/2’s 250VAC rating makes it compatible with global power systems, while its 0.5A current rating ensures precise protection for delicate components. The ferrule terminals facilitate secure mounting in fuse holders, reducing installation time and improving reliability. Mersen’s reputation for durability and precision engineering ensures that the GGA1/2 meets the demands of harsh industrial environments, including high temperatures, vibrations, and electrical noise. Installation best practices include: - Using compatible fuse holders rated for 5x20mm fuses to ensure proper contact and heat dissipation. - Verifying that the circuit’s voltage and current do not exceed the fuse’s ratings to prevent catastrophic failure. - Replacing fuses only with identical models to maintain system integrity and compliance with safety standards. With decades of expertise in electrical protection, Mersen delivers the GGA1/2 miniature fuse as a trusted solution for engineers and technicians seeking dependable, space-efficient overcurrent protection. Whether deployed in a factory automation system or a critical medical device, the GGA1/2 provides the reliability and performance required for modern electrical and electronic applications.
  • 250VAC voltage rating for global compatibility
  • 0.5A current rating for low-power circuit protection
  • Time-delay response to handle transient overloads
  • 5x20mm glass ferrule construction for compact applications
  • Manufactured by Mersen, a trusted leader in electrical protection

Specifications

AC Voltage Rating
250 V
Amperage Rating
0.5 A
Application
Electronic circuits
Brand Name
Mersen
Case
Glass
Class
Supplemental
Connection
Ferrule
Connection Type
Ferrule
Current Rating
0.5 A
Material
Glass
Mounting
Clip
Size
5x20 mm
Size
0.79 x 0.2 in
Size
20.066 x 5.08 mm
Special Features
Glass body Time-delay 5 mm x 20 mm
Standard
1/10 through 3A, 250VAC, UL Listed and CSA Certified 4A and 5A, 125VAC, UL Listed and CSA Certified
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.