Mersen RFS5 - Fuse RFS - Class H - Fast-Acting 600VAC 5A Ferrule
Mersen

RFS5

Alternate Item Number: RFS5

UPC: 068938720742


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Overview

The Mersen RFS5 is a fast-acting Class H fuse designed for general-purpose applications where available short-circuit currents do not exceed 10,000 amperes. This 5A, 600VAC ferrule fuse is a reliable component for protecting electrical circuits. For replacement fuse links, Mersen offers the RLS series, available in die-cut zinc links ranging from 3 to 600 amperes across 30 different ratings. The RFS series is compatible with Mersen Class H, K, and R 250 and 600V fuse blocks, which accommodate a wide range of wire types and sizes with various connector options. These fuse blocks feature high conductivity tin-plated copper clips and insulators with verified dielectric strength exceeding 2500V. Mersen's commitment to quality ensures durable and dependable circuit protection. The RFS5 fuse, manufactured in the USA, adheres to stringent industry standards, providing essential safety and operational integrity for your electrical systems. Its fast-acting nature ensures rapid interruption of fault currents, minimizing damage to equipment and preventing potential hazards. Trust Mersen for your critical overcurrent protection needs.
  • Fast-acting fuse for rapid overcurrent interruption
  • Class H, 5 Ampere, 600 Volt AC rating
  • Ferrule connection type
  • Suitable for general purpose applications up to 10,000A SCCR
  • Manufactured in the USA by Mersen

Specifications

AC Voltage Rating
600 V
Amperage Rating
5 A
Application
General purpose loads where short circuits are 10,000 amperes or less
Body Material
FWGE
Brand Name
Mersen
Class
Class H
Connection
Ferrule
Connection Material
Brass
Connection Type
Ferrule
Current Rating
5A
Interrupt Rating
10 kA
Material
Ferrule
Mounting
Clip
Series
RFS
Size
5 x 0.81 in
Size
127 x 20.625 mm
Special Features
Knurled bushings for ease of disassembly Rugged construction for maximum service life Precision die-cut renewal links renew quickly and give repeatable performance
Standard
UL listed to standard 248-7 File E2137 CSA certified to standard C22.2 no. 248.7
Type
Renewable Fuses
Voltage Rating
600 VAC
Package Dimensions (L x W x H)
5 in x 0.81 in x 0.81 in
Package Dimensions (L x W x H)
127 mm x 20.625 mm x 20.625 mm
Package Weight (Imperial)
0.170 lb
Package Weight (Metric)
0.077 kg
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POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

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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.