Mersen W084015 - Miniature Fuses Size 5x20 250V 12.5A High Speed FA Clip Mounting
Mersen

W084015

Alternate Item Number: MI5FA25V12.5


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Specification Sheet

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Overview

Mersen W084015 is a miniature fuse, size 5x20mm, rated for 250V and 12.5A. This fuse features a high-speed (FA) acting characteristic, providing rapid interruption of overcurrent and short circuit conditions. Designed for clip mounting, it ensures secure and reliable installation in various electronic circuits. The very fast-acting design is crucial for protecting sensitive semiconductor devices, measuring equipment, and control apparatus from damaging surges. Its high breaking capacity, a key specification for fuses, prevents extensive damage to connected equipment, thereby enhancing system longevity and operational reliability. This specific model, SKU W084015, is part of Mersen's range of miniature fuses known for their dependable performance in critical applications. The 5x20mm form factor is standard for many electronic enclosures, offering a compact protection solution. The FA designation signifies its suitability for applications requiring immediate response to fault currents, minimizing downtime and potential repair costs. This fuse is an essential component for safeguarding electronic systems where fast and precise overcurrent protection is paramount.
  • Size: 5x20mm
  • Voltage Rating: 250V
  • Current Rating: 12.5A
  • Interrupting Characteristic: High Speed (FA)
  • Mounting Type: Clip Mounting

Specifications

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 mm x 5 mm x 5 mm
Package Weight (Imperial)
0.0030 lb
Package Weight (Metric)
0.0010 kg

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.