Mersen A480R24R-1HE - Back-Up R-Rated Medium Voltage Fuse 4800VAC 24R Mounting: Ferrule Style: Hookeye Visual Indicator Amp-Trap®
Mersen

A480R24R-1HE

Alternate Item Number: A480R24R-1HE

UPC: 782001801502

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Overview

The Mersen A480R24R-1HE is a high-interrupting, current-limiting R-Rated backup fuse engineered for short-circuit protection in medium voltage motor applications up to 4800VAC. This 24R-rated fuse is specifically designed for use in combination motor starters where coordination with overload relays is critical to prevent nuisance tripping while ensuring comprehensive short-circuit protection. The A480R24R-1HE features a ferrule-style connection with a hookeye visual indicator, providing reliable electrical contact and simplified installation in spring-reinforced clips. The fuse is available in two barrel diameters: 3-inch (size D) and 4-inch (size E), offering flexibility to match various motor starter configurations. This R-Rated fuse meets stringent industrial standards for medium voltage motor protection, including UL 198L and ANSI/IEEE C37.46, ensuring compliance with safety and performance requirements. R-Rated fuses like the A480R24R-1HE are optimized to interrupt high fault currents rapidly while allowing overload relays to handle sustained overload conditions, thereby protecting motors and associated equipment from damage. The fuse's design ensures seamless compatibility with standard motor starter configurations, where the starter manufacturer typically specifies the required fuse size to achieve optimal coordination. With a minimum interrupting rating of 50kA RMS symmetrical at 4800VAC, the A480R24R-1HE delivers robust protection in demanding industrial environments, including manufacturing plants, utilities, commercial facilities, and other applications where medium voltage motors operate. Its durable construction and precise engineering make it a reliable choice for safeguarding critical electrical systems against short-circuit faults.
  • 4800VAC voltage rating for medium voltage applications
  • 24R current rating with R-Rated fuse technology
  • Ferrule-style connection for secure electrical contact
  • Hookeye visual indicator for easy status verification
  • Available in 3-inch (size D) or 4-inch (size E) diameters
  • Spring-reinforced clip mounting for reliable retention
  • Current-limiting design for superior short-circuit protection
  • Designed for coordination with overload relays in motor starters

Specifications

AC Voltage Rating
4800 V
Application
Short circuit protection of medium voltage motors and motor controllers
Body Material
Epoxy
Brand Name
Mersen
Connection
Ferrule
Connection Material
Silver-Plated Copper
Connection Type
Ferrule
Current Rating
24R
Interrupt Rating
50 kA
Mounting
Clip
Mounting Type
Hookeye
Series
Amp-Trap®
Size
3-inch (size D) or 4-inch (size E)
Size
16.13 x 6.41 x 6.41 in
Size
409.702 x 162.814 x 162.814 mm
Special Features
The Amp-Trap and 9F60 R-Rated fuses are UL Recognized Ferrule mounting for standard clips and interchangeability with other brands of fuses Current-limiting for superior equipment protection Metal embossed catalog number and manufacturing date for lasting identification Hookeye for non load-break isolation by hookstick: On the 4.8kV an optional hookeye mounted in the factory is available On all other 3" barrels if a hookeye is required, use the operating eye 9F61AAW612 Blown-fuse indicator to give positive identification of open fuse Amp trap: 3" Barrel 2 lb tripped force - 0.50 Inch 9F60: 0.125 lb tripped force – 0.20 Inch
Standard
Amp-Trap: UL File E93367 9F60: UL File E191980
Sub Brand
Amp-Trap®
Type
Back-Up R-Rated Ferrule Mount Fuses for Motor Protection
Type of Indicators
Visual Indicator
Voltage Rating
4800 VAC
Voltage Rating
4800VAC
Package Dimensions (L x W x H)
16.13 in x 6.41 in x 6.41 in
Package Dimensions (L x W x H)
409.702 mm x 162.814 mm x 162.814 mm
Package Weight (Imperial)
21.600 lb
Package Weight (Metric)
9.798 kg

Similar Products

A480R24R-1

Interrupt Rating: 64 kA

Size: 15.88 x 6.41 x 6.41 in

A480R12R-1HE

Size: 16.13 x 3 in

Voltage Rating: 4800 VAC

Current Rating: 12R

A480R18R-1HE

Voltage Rating: 4800 VAC

Current Rating: 18R

Mounting Type: Spring-reinforced clips

A480R12R-1

Interrupt Rating: 65 kA

Size: 15.88 x 3 in

A480R18R-1

Interrupt Rating: 64 kA

Size: 15.88 x 6.41 x 6.41 in

A480R36R-1

Interrupt Rating: 64 kA

Size: 15.88 x 9.72 x 9.72 in

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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.