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Mersen GSB1 - Miniature fuse GSB - Fast-Acting 250VAC 1A Size 5x20 Ferrule
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Mersen GSB1 Miniature fuse GSB - Fast-Acting 250VAC 1A Size 5x20 Ferrule

Alternate Item Number: GSB1

UPC: 782001764838


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Line DrawingSpecification 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 GSB1 miniature fuse (SKU: GSB1) is a fast-acting, 5x20mm ferrule fuse rated at 250VAC and 1A. Designed for rapid response to overcurrent and short-circuit conditions, it interrupts electrical flow almost instantaneously to protect sensitive electronic equipment, control panels, and power supplies. The GSB1 features a durable glass body for visual inspection of the fuse element, enabling quick fault detection and troubleshooting in industrial and commercial applications. Its compact size and ferrule design ensure compatibility with standard fuse holders and sockets, simplifying installation and replacement. The fuse is designed for midget, PC mount, and miniature fuse applications, meeting IEC-127-2 Standard Sheet 2* requirements. With UL and CSA recognition for 1/16A through 10A ratings, the GSB1 provides reliable protection for circuits requiring precise current limitation. Ideal for power supplies, instrumentation, telecommunications equipment, and consumer electronics, this fuse delivers consistent performance for critical applications.
  • Fast-acting response to overcurrent and short-circuit conditions
  • 5x20mm glass body with ferrule terminals for standard fuse holders
  • Rated 250VAC, 1A for low-voltage AC circuit protection
  • UL and CSA recognized for 1/16A through 10A range
  • Compatible with midget, PC mount, and miniature fuse applications

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
1A
Material
Glass
Mounting
Clip
Series
GSB
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
Special Features
Glass body Fast-acting 5 mm x 20 mm
Standard
1/2A through 10A, 250VAC, UL and CSA Recognized 1/2A through 6-3/10A, 250VAC, SEMKO Approved 1/2A through 6-3/10A, 250VAC, VDE Approved IEC-127-2 Standard Sheet 2
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
Miniature fuse GGM - Fast-Acting 250VAC 1A Size 5x20 Ferrule

GGM1

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-V - Time-Delay 250VAC 0.063A Size 5x20 Soldered connection

GDG-V1/16

Miniature fuse GDG-V - Time-Delay 250VAC 0.063A Size 5x20 Soldered connection
Miniature fuse GGC-V - Fast-Acting 250VAC 0.15A Size 6,3x32 Soldered connection

GGC-V15/100

Miniature fuse GGC-V - Fast-Acting 250VAC 0.15A Size 6,3x32 Soldered connection
Miniature fuse GDG-V - Time-Delay 250VAC 0.08A Size 5x20 Soldered connection

GDG-V8/100

Miniature fuse GDG-V - Time-Delay 250VAC 0.08A Size 5x20 Soldered connection
Miniature fuse GSC-V - Time-Delay 250VAC 1.6A Size 5x20 Soldered connection

GSC-V1-6/10

Miniature fuse GSC-V - Time-Delay 250VAC 1.6A Size 5x20 Soldered connection
Miniature fuse GSB - Fast-Acting 250VAC 2A Size 5x20 Ferrule

GSB2

Miniature fuse GSB - Fast-Acting 250VAC 2A Size 5x20 Ferrule
Miniature fuse GSB - Fast-Acting 250VAC 1.6A Size 5x20 Ferrule

GSB1-6/10

Miniature fuse GSB - Fast-Acting 250VAC 1.6A Size 5x20 Ferrule

Frequently Asked Questions

What is the physical size of the GSB1 fuse?

The GSB1 fuse has dimensions of 5 x 20 mm.

Are there axial lead versions of the GSB1 fuse available?

Yes, axial lead versions are available and indicated by the GSB-V catalog number.

What are the available ampere ratings for GSB1 fuses?

The GSB1 fuses are available in ampere ratings from 1/2A up to 10A.

What is the maximum voltage rating for GSB1 fuses?

The GSB1 fuses have a maximum voltage rating of 250VAC.

What type of body construction does the GSB1 fuse have?

The GSB1 fuse features a glass body construction.

What standards are the GSB1 fuses recognized under?

The GSB1 fuses are UL and CSA Recognized, SEMKO Approved, and VDE Approved.

What is the IEC standard applicable to GSB1 fuses?

The GSB1 fuses comply with IEC-127-2 Standard Sheet 2.

What is the interrupting rating (I.R.) for GSB1 fuses?

The interrupting rating varies by ampere rating, ranging from 1 to 6.

What is the typical application for GSB1 fuses?

GSB1 fuses are electronic/glass fuses suitable for mid-gauge, PC mount, and miniature fuse applications.

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.