Mersen GSD1/4 - 250V Fast Acting Glass 5mm x 20mm 250 Volts 0.25 Amps GSD series.
Mersen

GSD1/4

Alternate Item Number: 782001244545

UPC: 782001244545

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Minimum Qty: 5

Multiplier: 5

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Overview

The Mersen GSD1/4 is a high-performance, fast-acting glass fuse engineered for precise overcurrent protection across a wide spectrum of industrial and electronic applications. This compact 5mm x 20mm fuse is a critical component for safeguarding sensitive circuits and equipment from damaging surges and faults. With a robust rating of 250 Volts and a precise 0.25 Ampere current limit, the GSD1/4 offers dependable and rapid response to overcurrent conditions, minimizing downtime and preventing costly component failures. As a key product within Mersen's trusted GSD series, this fuse embodies the manufacturer's commitment to quality and reliability. Mersen is a globally recognized leader in electrical protection solutions, and their GSD series fuses are designed to meet the stringent demands of modern electronic systems. The fast-acting nature of this fuse means it interrupts the circuit almost instantaneously upon detecting an overcurrent event, providing superior protection compared to time-delay fuses in applications where rapid fault clearing is paramount. Key features and benefits of the Mersen GSD1/4 include: * **Fast-Acting Performance:** Essential for protecting sensitive electronics where rapid interruption of fault currents is critical. * **Precise Current Rating:** A 0.25A rating ensures protection against specific overcurrent thresholds. * **250V Voltage Rating:** Suitable for a broad range of low-voltage industrial and electronic power systems. * **Compact 5mm x 20mm Size:** Facilitates easy integration into a variety of fuse holders and compact equipment designs. * **Durable Glass Construction:** Offers visual inspection of the fuse element and reliable performance. * **Trusted Mersen Quality:** Manufactured by a leader in electrical safety, ensuring consistent performance and reliability. The GSD1/4 finds extensive application in power supplies, control circuits, instrumentation, telecommunications equipment, and various other electronic devices where reliable overcurrent protection is non-negotiable. Its ability to quickly isolate faults helps maintain system integrity, prolong the lifespan of components, and ensure operational continuity. Professionals in the electronics manufacturing, industrial automation, and maintenance sectors rely on fuses like the Mersen GSD1/4 for their critical protection needs. When selecting a fuse, engineers and technicians consider the voltage, current, interrupting rating, and response time to match the specific requirements of the circuit being protected. The GSD1/4's specifications make it an excellent choice for circuits requiring precise and immediate overcurrent interruption. Mersen's reputation for producing high-quality, reliable electrical components underscores the value and dependability of the GSD1/4 fuse in demanding operational environments.
  • Fast-acting interruption for sensitive circuit protection
  • 250V AC/DC voltage rating
  • 0.25 Ampere current rating
  • Standard 5mm x 20mm glass fuse size
  • Trusted Mersen GSD Series quality and reliability

Specifications

Amperage Rating
0.25 A
Application
Electronic circuits
Brand Name
Ferraz Shawmut
Connection
Ferrule
Current Rating
0.25 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)
0.005 L
Package Weight (Metric)
0.002 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.

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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.