Mersen FEX-81-81-BA - The Mersen FEX-81-81-BA is a high-quality industrial component designed for demanding applications. Engineered for reliability and durability, this product meets stringent performance standards, ensuring optimal operation in harsh environments. Ideal for industrial machinery, power systems, and automation, the FEX-81-81-BA delivers consistent performance and long-term value. Trusted by professionals worldwide, Mersen's commitment to innovation and quality ensures this component meets the highest industry benchmarks.
Mersen

FEX-81-81-BA

UPC: 782001493295


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Overview

The Mersen FEX-81-81-BA is a premium industrial component engineered to deliver uncompromising performance in the most demanding environments. Designed for professionals who demand reliability, durability, and long-term operational integrity, this component represents Mersen’s commitment to innovation and quality across industrial applications. Built to meet and exceed stringent industry standards, the FEX-81-81-BA ensures consistent operation under extreme conditions, making it an essential choice for engineers and system integrators in power systems, automation, and heavy machinery sectors. This industrial component is specifically crafted for high-stress environments where electrical and mechanical reliability cannot be compromised. Whether deployed in power distribution systems, automation control panels, or industrial machinery, the FEX-81-81-BA provides robust performance with minimal maintenance requirements. Its robust construction and adherence to rigorous performance benchmarks make it ideal for use in sectors such as manufacturing, energy, transportation, and infrastructure development. Professionals select the FEX-81-81-BA for its proven track record of dependability in critical applications. Mersen, a global leader in electrical protection and power management solutions, has designed this component to integrate seamlessly into existing systems while offering enhanced operational safety and efficiency. The product’s design reflects Mersen’s deep expertise in materials science and electrical engineering, ensuring optimal thermal and electrical performance even in high-temperature or high-vibration settings. Installation of the FEX-81-81-BA is straightforward for qualified technicians, thanks to its standardized form factor and compatibility with common industrial mounting systems. Mersen provides comprehensive technical documentation and support to facilitate smooth integration, including wiring diagrams, dimensional specifications, and application guidelines. This level of support underscores Mersen’s dedication to customer success and operational excellence. Choosing Mersen as your industrial component supplier means partnering with a company that has been trusted by professionals worldwide for over a century. Mersen’s global footprint, combined with its relentless focus on research and development, ensures that products like the FEX-81-81-BA are built to last and engineered to evolve with technological advancements. Whether upgrading legacy systems or designing next-generation industrial solutions, engineers and procurement teams can rely on the FEX-81-81-BA to deliver consistent, high-performance operation year after year.
  • High-reliability industrial component designed for harsh environments
  • Meets stringent performance standards for power systems and automation
  • Robust construction ensures long-term durability and minimal maintenance
  • Seamless integration with existing industrial systems and mounting configurations
  • Backed by Mersen’s global expertise and comprehensive technical support

Specifications

Type
UL/CSA Fuse Bases
Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
Control Transformer Accessories - Secondary Fuse Kit 3

SFK3

Control Transformer Accessories - Secondary Fuse Kit 3
Features:For (2) Fuses with Primary and Secondary Finger Safe Covers Kit, Application:Control Transformer, Class:CC

FBPC1

Features:For (2) Fuses with Primary and Secondary Finger Safe Covers Kit, Application:Control Transformer, Class:CC
The Littelfuse 600 V in-line watertight fuse holders are the ideal answer for all high humidity and corrosive environments where fuses are required. Available in both breakaway and non-breakaway, single and double pole versions, these fuse holders allow maximum flexibility for any application.

LEXAA

The Littelfuse 600 V in-line watertight fuse holders are the ideal answer for all high humidity and corrosive environments where fuses are required. Available in both breakaway and non-breakaway, single and double pole versions, these fuse holders allow maximum flexibility for any application.
RM PV 1P 10/14X85 1500VDC

57PV1085

RM PV 1P 10/14X85 1500VDC
PRIMARY FUSE KIT, CLASS CC, 2POLE

FKTP-1001

PRIMARY FUSE KIT, CLASS CC, 2POLE
Fuse Holder, 600V Threaded

18880300002

Fuse Holder, 600V Threaded
FUSE HOLDER KIT, 1 PER, 153D SERIES

FH_KIT1

FUSE HOLDER KIT, 1 PER, 153D SERIES
BF AUTO BLACK FUSE HOLDER

1SNA299486R2400

BF AUTO BLACK FUSE HOLDER

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.