Mersen GSD1/2-B - 250V Fast Acting Glass 5mm x 20mm 250 Volts 0.5 Amps GSD (bulk packaging) series.
Mersen

GSD1/2-B

Alternate Item Number: 782001387693

UPC: 782001387693

Contact for Pricing

Overview

The Mersen GSD1/2-B is a high-performance, fast-acting glass fuse engineered for critical circuit protection in demanding industrial and electronic environments. As a key component in safeguarding sensitive equipment, this fuse offers precise overcurrent and short-circuit protection, ensuring operational integrity and preventing costly damage. Its compact 5mm x 20mm form factor makes it ideal for integration into space-constrained designs, common in modern electronic devices and control panels. With a robust 250V voltage rating and a finely tuned 0.5 Amp current rating, the GSD1/2-B is specifically designed to interrupt fault currents rapidly. This fast-acting characteristic is paramount in applications where even milliseconds of overcurrent can lead to component failure or system malfunction. The durable glass construction of the Mersen GSD series provides excellent visibility of the fuse element, allowing for quick visual inspection, and contributes to reliable thermal and electrical performance under various operating conditions. This makes it a preferred choice for protecting sensitive electronic circuits, sophisticated control systems, and essential power supplies. Industries relying on the Mersen GSD1/2-B include telecommunications, industrial automation, medical equipment, and consumer electronics. Its ability to offer dependable protection in these critical sectors underscores its value. The fuse's fast-acting response time is crucial for minimizing the impact of electrical anomalies, thereby extending the lifespan of connected devices and maintaining system uptime. This reliability is a hallmark of Mersen's commitment to quality and safety in fuse technology. Available in convenient bulk packaging, the GSD1/2-B is an economically sound solution for manufacturers and integrators requiring high volumes of reliable fuses. This packaging format ensures that large-scale projects can be provisioned efficiently without compromising on the quality or performance expected from a leading brand like Mersen. Choosing the GSD1/2-B means investing in consistent performance, enhanced safety, and the peace of mind that comes with using a trusted industrial component. Key Specifications and Benefits: * **Fast-Acting Protection:** Rapidly interrupts overcurrents and short circuits to protect sensitive components. * **Precise Ratings:** 250V voltage and 0.5A current ratings ensure accurate circuit protection. * **Compact Size:** 5mm x 20mm dimensions are ideal for space-limited applications. * **Durable Glass Construction:** Offers excellent thermal and electrical performance and allows for visual inspection. * **Bulk Packaging:** Cost-effective solution for high-volume industrial and manufacturing needs. * **Manufacturer Reliability:** From Mersen, a globally recognized leader in electrical protection solutions. When selecting fuses for critical applications, professionals prioritize components that offer both precise protection and long-term reliability. The Mersen GSD1/2-B fuse meets these demands, providing a dependable solution for a wide array of industrial and electronic equipment. Its consistent performance and adherence to stringent quality standards make it an indispensable component for ensuring the safety and functionality of electrical systems.
  • Mersen GSD1/2-B Fast Acting Glass Fuse
  • 250V Voltage Rating
  • 0.5 Amp Current Rating
  • 5mm x 20mm Standard Size
  • Bulk Packaging for High Volume Needs

Specifications

Amperage Rating
0.05 A
Application
Electronic circuits
Brand Name
Ferraz Shawmut
Connection
Ferrule
Interrupt Rating
1.5 kA
Mounting
Clip
Special Features
Ceramic BodyFast-Acting5mm x 20mmGSD-V fuses have 1-1/2" wire lead each end.
Standard
UL/CSA Recognized 1/16A - 10A, 250VAC, SEMKO Approved 1A - 6-3/10A, 250VAC VDE Approved 1A - 6-3/10A, 250VAC, !EC 127-2 Sheet 1
Type
5 X 20 mm miniature fuses
Voltage Rating
250 VAC
Package Dimensions (L x W x H)
0.787 IN x 0.2 IN x 0.2 IN
Package Dimensions (L x W x H)
19.9898 mm x 5.08 mm x 5.08 mm
Package Weight (Imperial)
0.500 L
Package Weight (Metric)
0.227 kg
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POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

LCC5

POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.
9F61 Size B Clips 1.6in

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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.