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Mersen R084310 - Miniature Fuses Size 6.3x32 250V 4A High Speed FA Clip Mounting
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Mersen R084310 Miniature Fuses Size 6.3x32 250V 4A High Speed FA Clip Mounting

Alternate Item Number: MI6FA25V4


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Specification Sheet

Contact for Pricing

Minimum Qty: 50

Multiplier: 50

*Contact for lower quantities*

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

Mersen Miniature Fuse (SKU: R084310) is a Size 6.3x32mm FA (very fast-acting) fuse rated for 250V and 4A, engineered for precise overcurrent protection in sensitive electronic circuits. This fuse is optimized for semiconductor devices, measuring and control apparatus, and applications requiring rapid fault response to prevent thermal stress or catastrophic failure. The FA designation ensures faster operation than standard fuses, minimizing damage during short circuits. The fuse features a clip mounting design for secure installation in compact enclosures. With a breaking capacity suitable for 250V systems, it reliably interrupts fault currents before they escalate. The 6.3x32mm dimensions ensure compatibility with standard fuse holders and panels. Built to Mersen’s quality standards, this fuse delivers consistent performance in industrial, automotive, and instrumentation applications where reliability is critical. Common use cases include power supplies, PLCs, sensors, and test equipment. The fuse’s high-speed response is particularly valuable in circuits with low fault tolerance, such as those containing MOSFETs, IGBTs, or other sensitive semiconductors.
  • Size: 6.3x32mm for standard fuse holder compatibility
  • Rating: 250V, 4A, FA (very fast-acting) response
  • Mounting: Clip mount design for secure installation
  • Applications: Semiconductors, power supplies, PLCs, sensors
  • Benefits: Rapid fault response, low I²t, minimizes thermal stress

Specifications

Connection Type
clip mounting
Current Rating
4 A
Mounting Type
Clip Mounting
Mounting Type
Clip Mount
Series
FA
Size
6.3x32 mm
Size
6.3x32
Voltage Rating
250 V
Package Dimensions (L x W x H)
1.26 in x 0.25 in x 0.25 in
Package Dimensions (L x W x H)
32 mm x 6.3 mm x 6.3 mm
Package Weight (Imperial)
0.0060 lb
Package Weight (Metric)
0.0020 kg
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Frequently Asked Questions

What is the voltage rating of this fuse?

The fuse has a voltage rating of 250V.

What does FA mean in the fuse designation?

FA indicates the fuse is very fast-acting, providing rapid response to overcurrent conditions.

What is the current rating of this fuse?

The fuse is rated for 4A.

What are the dimensions of this fuse?

The fuse measures 6.3x32mm.

What is the mounting type for this fuse?

The fuse uses clip mounting for secure installation.

Where is this fuse commonly used?

Common applications include power supplies, PLCs, sensors, and test equipment.

What is the benefit of a very fast-acting fuse?

A very fast-acting fuse minimizes damage to protected components by interrupting fault currents quickly.

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.