Mersen FES4 - Fuse FES – HRC-II 600VAC 460VDC 4A Blade
Mersen

FES4

Alternate Item Number: FES4

UPC: 068938904111


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Overview

The Mersen FES4 fuse (SKU: FES4) is a Class C, HRC-II rated blade fuse designed for critical short-circuit protection in industrial applications. It meets British Standard BS88 dimensions, ensuring precise fitment and preventing interchangeability with non-conforming North American fuse types. Rated for 4 Amperes, 600 Volts AC, and 460 Volts DC, it features a durable ceramic body and bolt-in mounting for secure installation. Optimized for applications where overload protection is handled separately, such as motor controllers. Manufactured in the USA to exacting standards for dependable performance.
  • Class C, HRC-II rated for 4A, 600VAC/460VDC
  • British Standard BS88 dimensions for precise fitment
  • Ceramic body with bolt-in mounting for secure installation
  • Prevents interchangeability with non-conforming North American fuse types
  • Optimized for applications with separate overload protection

Specifications

AC Voltage Rating
600 V
Amperage Rating
4 A
Application
Short circuit and back-up protection of motor controllers and components
Body Material
PolyTube
Brand Name
Mersen
Class
Class C
Connection
Blade
Connection Material
Copper
Connection Type
Bolt-In
Connection Type
Blade Type
Current Rating
4 A
Current Rating
4A
DC Voltage Rating
460 V
Family Code
119
Family Description
HRC Class C Form II
Fuse Class
Class C
Interrupt Rating
200 kA
Material
Ceramic
Mounting
Bolted
Mounting Type
Bolt-in
Series
FES
Series
FES 2-30
Series
HRC-II
Size
Blade
Size
2.06" diameter, 3.31" length
Size
3.31 x 0.81 in
Size
84.074 x 20.574 mm
Special Features
BS88 dimensions Fast-acting
Standard
CSA Certified HRCII-MISC IEC 269-2-1
Type
HRC Fuses
Voltage Rating
600VAC/460VDC
Voltage Rating
600VAC 460VDC
Voltage Rating
600 VAC / 460 VDC
Voltage Rating
600 VAC
Package Dimensions (L x W x H)
3.31 in x 0.81 in x 0.81 in
Package Dimensions (L x W x H)
84.074 mm x 20.574 mm x 20.574 mm
Package Weight (Imperial)
0.108 lb
Package Weight (Metric)
0.049 kg
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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.