Mersen E084368 - Miniature Fuses Size 6.3x32 400V 0.63A High Speed FA Clip Mounting
Mersen

E084368

Alternate Item Number: MI6FA40V0.63


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Specification Sheet

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Overview

Mersen Miniature Fuses (SKU: E084368) are 6.3x32mm high-speed fuses rated at 400V and 0.63A, designed for FA/FB fast-acting protection in sensitive electronic circuits. These miniature fuses provide rapid response to overcurrent and short-circuit conditions, safeguarding semiconductor devices and other sensitive components from damage. The FA/FB design ensures very fast-acting interruption, critical for protecting modern electronics where even millisecond delays can cause failure. These fuses feature clip mounting for secure installation in compact spaces, making them ideal for applications where board real estate is limited. Available with or without a trip indicator, they offer flexibility in monitoring fuse status. The 400V rating supports use in industrial control systems, power supplies, and instrumentation where higher voltage protection is required. With a very high breaking capacity, these fuses prevent catastrophic damage by interrupting fault currents before they escalate. Common applications include power conversion systems, motor drives, and control panels where precise overcurrent protection is essential. The 6.3x32mm form factor is a standard size in miniature fuse applications, ensuring compatibility with existing fuse holders and clips. Mersen’s high-quality construction ensures consistent performance and long-term reliability in demanding environments.
  • Size 6.3x32mm miniature fuse for compact applications
  • 400V rating with 0.63A current for sensitive electronics
  • FA/FB fast-acting design for rapid overcurrent protection
  • Clip mounting for secure installation in tight spaces
  • Available with or without trip indicator for monitoring

Specifications

Current Rating
0.63 A
Material
High-quality materials
Mounting Type
Clip Mounting
Series
Miniature Fuses 6x32 FA/FB
Size
6.3x32
Voltage Rating
400 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

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.