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Mersen GSA1 - Miniature fuse GSA - Time-Delay 250VAC 1A Size 6,3x32 Ferrule
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Mersen GSA1 Miniature fuse GSA - Time-Delay 250VAC 1A Size 6,3x32 Ferrule

Alternate Item Number: GSA1

UPC: 782001764098

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3D CAD Model (STEP)Specification Sheet

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Minimum Qty: 5

Multiplier: 5

*Contact for lower quantities*

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The Mersen GSA1 miniature fuse (SKU: GSA1) is a ceramic-bodied, time-delay fuse rated for 250VAC and 1A. Designed for industrial and electronic applications, it provides reliable overcurrent protection with a time-delay characteristic to handle inrush currents common in motors, transformers, and power supplies. The 6.3x32mm ferrule size ensures compatibility with standard fuse holders and equipment. The ceramic construction delivers high dielectric strength and thermal stability, making it suitable for harsh environments. Time-delay operation prevents nuisance tripping during temporary surges while maintaining rapid fault protection. Ideal for control circuits, power supplies, lighting systems, and electronic devices, the GSA1 fuse combines durability and precision. Its compact 6.3x32mm ferrule design allows integration into space-constrained panels and equipment. Mersen’s expertise in fuse technology ensures reliable performance in critical infrastructure and industrial machinery.
  • Ceramic body for high dielectric strength and thermal stability
  • Time-delay operation prevents nuisance tripping during inrush currents
  • 6.3x32mm ferrule size for compatibility with standard fuse holders
  • Ideal for motors, transformers, power supplies, and control circuits
  • UL Listed (1/2A–8A, 250VAC) and CSA Certified (1/2A–8A, 250VAC)
  • Durable Ceramic Body Construction
  • UL Listed and CSA Certified

Specifications

AC Voltage Rating
250 V
Amperage Rating
1 A
Application
Electronic circuits
Brand Name
Mersen
Case
Ceramic
Case Material
Ceramic
Class
Supplemental
Connection
Ferrule
Connection Type
Ferrule
Current Rating
1A
Material
Ceramic
Mounting
Clip
Series
GSA
Size
1.25 x 0.25 in
Size
31.75 x 6.35 mm
Size
1.25 x 0.25;31.75 x 6.35 in;mm
Size
6.3x32mm
Special Features
Ceramic body Time-delay 1/4" x 1-1/4"
Standard
1/2A through 8A, 250VAC, UL Listed 10, 12, 15A, 250V UL Recognized 1/2A through 8A, 250VAC, CSA Certified 10, 12, 15A, 250V CSA Recognized 20A, 250VAC, 25 & 30A, 125VAC
Type
6x32mm, 1/4" X 1-1/4"
Voltage Rating
250 VAC
Package Dimensions (L x W x H)
1.25 in x 0.25 in x 0.25 in
Package Dimensions (L x W x H)
31.75 mm x 6.35 mm x 6.35 mm
Package Weight (Imperial)
0.010 lb
Package Weight (Metric)
0.005 kg
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Frequently Asked Questions

What is the physical size of the GSA fuses?

The GSA fuses are 1/4" x 1-1/4" in size.

What are the voltage and interrupting ratings for GSA fuses?

Fuses are rated for 250VAC with interrupting ratings from 1kA to 750A, and 125VAC with a 10kA interrupting rating.

What type of fuse construction does the GSA series use?

The GSA series features a ceramic body and is a time-delay fuse.

Which GSA fuse ratings are UL Listed and CSA Certified?

1/2A through 8A at 250VAC are UL Listed and CSA Certified. 10A, 12A, and 15A at 250V are UL Recognized and CSA Recognized.

What fuse sizes are available for the GSA series?

The GSA series offers fuse sizes from 1/2A up to 30A, in various increments.

What are the ratings for the 20A, 25A, and 30A GSA fuses?

The 20A fuse is rated for 250VAC, while the 25A and 30A fuses are rated for 125VAC.

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.