Mersen GSF1/4 Miniature fuse GSF - Time-Delay 250VAC 0.25A Size 5x20 Ferrule
Alternate Item Number: GSF1/4
UPC: 782001244965
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Overview
- 250VAC voltage rating with 0.25A current rating
- Time-delay operation prevents nuisance tripping from inrush currents
- 5x20mm ceramic ferrule construction for thermal stability
- 1500A interrupting rating at 250VAC for reliable fault protection
- UL and CSA recognized, compliant with IEC-127-2 Standard Sheet 5
Specifications
AC Voltage Rating | 250 V |
Amperage Rating | 0.25 A |
Application | Electronic circuits |
Brand Name | Mersen |
Case | Ceramic |
Case Material | Ceramic |
Class | Supplemental |
Connection | Ferrule |
Connection Type | Ferrule |
Current Rating | 0.25 A |
Material | Ceramic |
Mounting | Clip |
Series | GSF |
Size | 0.79 x 0.2;20.066 x 5.08 in;mm |
Size | 0.79 x 0.2 in |
Size | 20.066 x 5.08 mm |
Size | 5x20mm |
Size | 5mm x 20mm |
Special Features | Ceramic body Time-delay 5 mm x 20 mm |
Standard | 1/2A through 8/10A, 250VAC 1A through 6-3/10A, 250VAC, SEMKO, VDE Approved 1A through 10A, 250VAC, UL and CSA Recognized IEC-127-2 Standard Sheet 5 |
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 |
0251.630MXL
VERY FAST-ACTING PICO II M-PACK .630A. The PICO® II Very Fast-Acting Fuse is designed to meet an extensive array of performance characteristics in a space-saving subminiature package. Features: Very fast-acting. Small size. Wide current rating range (62mA- 15A). RoHS compliant. Halogen-free available. Wide operating temperature range. Low temperature rerating.
Frequently Asked Questions
What are the available ampere ratings for GSF fuses?
GSF fuses are available in ratings from 1/4A to 10A.
What is the maximum voltage rating for GSF fuses?
The maximum voltage rating for GSF fuses is 250VAC.
What is the interrupting rating (I.R.) for these fuses?
The interrupting rating for these fuses is 1500A at 250VAC.
What is the physical size of the GSF fuses?
The GSF fuses have a 5 x 20 mm size.
What type of body construction do GSF fuses have?
GSF fuses feature a ceramic body construction.
What is the time-delay characteristic of GSF fuses?
GSF fuses are designed with a time-delay characteristic.
What standards do the GSF fuses comply with?
GSF fuses comply with IEC-127-2 Standard Sheet 5.
Which GSF fuse ratings are UL and CSA recognized?
GSF fuses from 1/4A through 10A at 250VAC are UL and CSA recognized.
Which GSF fuse ratings are SEMKO and VDE approved?
GSF fuses from 1A through 6-3/10A at 250VAC are SEMKO and VDE approved.
Are there axial lead versions of the GSF fuses?
Yes, axial lead versions are available and indicated by the GSF-V catalog number prefix.
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.