Mersen GSD1/20-B - 250V Fast Acting Glass 5mm x 20mm 250 Volts 0.05 Amps GSD (bulk packaging) series.
Mersen

GSD1/20-B

Alternate Item Number: 782001387600

UPC: 782001387600

Contact for Pricing

Overview

The Mersen GSD1/20-B is a meticulously engineered fast-acting glass fuse, designed to provide critical overcurrent protection for a wide array of industrial and electronic systems. With its precise 250V voltage rating and a sensitive 0.05A current rating, this 5mm x 20mm fuse is an indispensable component for safeguarding delicate circuitry from damaging surges and faults. Manufactured by Mersen, a globally recognized leader in electrical protection solutions, the GSD1/20-B embodies the company's commitment to quality, reliability, and performance. This fuse belongs to Mersen's esteemed GSD series, which is specifically developed for applications demanding compact form factors without compromising on protection efficacy. The clear glass body of the GSD1/20-B offers a significant advantage by allowing for immediate visual confirmation of the fuse element's integrity, simplifying troubleshooting and maintenance procedures. This feature is particularly valuable in environments where rapid diagnostics are paramount. Key specifications and benefits of the Mersen GSD1/20-B include: * **Fast-Acting Performance:** Designed to interrupt fault currents with exceptional speed, minimizing the duration of overcurrent events and thereby reducing the risk of collateral damage to sensitive electronic components. * **Precise Current Interruption:** The 0.05A rating ensures that even minor overcurrents are detected and interrupted, offering a high degree of protection for low-power circuits. * **Robust Voltage Rating:** A 250V rating makes it suitable for a broad spectrum of AC and DC applications commonly found in power supplies, control panels, and instrumentation. * **Standard 5mm x 20mm Form Factor:** This universally recognized size ensures compatibility with a vast range of fuse holders and equipment designs, facilitating easy integration and replacement. * **Durable Glass Construction:** The glass tube provides excellent dielectric strength and resistance to environmental factors, ensuring long-term operational stability. * **Bulk Packaging:** Supplied in bulk packaging, the GSD1/20-B is an economically viable choice for manufacturers and integrators requiring large quantities, optimizing procurement and inventory management. The Mersen GSD1/20-B is ideally suited for a diverse range of applications, including but not limited to: * **Power Supplies:** Protecting sensitive internal components in both AC-DC and DC-DC converters. * **Control Circuits:** Safeguarding logic boards, microcontrollers, and sensor inputs in automation and industrial control systems. * **Instrumentation:** Ensuring the reliable operation of measurement devices and analytical equipment. * **Consumer Electronics:** Providing essential safety features in various electronic devices. * **Telecommunications Equipment:** Protecting critical circuitry in network infrastructure and communication devices. Professionals in the electronics manufacturing, industrial automation, and telecommunications sectors rely on Mersen for their fuse requirements due to the brand's unwavering dedication to producing high-quality, dependable components. The GSD1/20-B is a testament to this legacy, offering peace of mind through its consistent and reliable performance. When selecting fuses, engineers and technicians prioritize factors such as voltage and current ratings, interrupting capacity, and response time, all of which are expertly addressed by this Mersen offering. Its availability in bulk packaging further underscores its suitability for high-volume production environments where efficiency and cost-effectiveness are key considerations. Trust the Mersen GSD1/20-B for superior circuit protection in your most demanding applications.
  • Mersen GSD1/20-B 250V Fast Acting Glass Fuse
  • 0.05 Amp current rating for sensitive circuit protection
  • Standard 5mm x 20mm fuse dimensions
  • Durable glass body with visible fuse element
  • Bulk packaging for cost-effective high-volume use

Specifications

Amperage Rating
0.05 A
Application
Electronic circuits
Brand Name
Ferraz Shawmut
Connection
Ferrule
Current Rating
0.05 A
Interrupt Rating
1.5 kA
Material
Glass
Mounting
Clip
Series
GSD
Size
5mm x 20mm
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.