Mersen AJT60 - Fuse AJT - Class J - Time-delay 600VAC 400VDC 60A Ferrule SmartSpot® Amp-Trap 2000®
Mersen

AJT60

Alternate Item Number: AJT60

UPC: 782001962388


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Overview

The Mersen Amp-Trap 2000® AJT60 fuse (SKU: AJT60) is a Class J, time-delay fuse designed for robust circuit protection. It features a 60A rating and supports 600VAC and 400VDC applications. The AJT fuse provides IEC Type 2 No Damage protection for main, feeder, and branch circuits across all load types. Its time-delay characteristics are optimized for motor and transformer inrush currents, while offering superior current-limiting capabilities. This fuse boasts a 300kA interrupting rating (self-certified, UL witnessed). Key features include the SmartSpot® visual open fuse indicator for quick identification of blown fuses, and unique Class J dimensions that prevent misreplacement. The fiberglass body ensures dimensional stability, and high-grade silica filler facilitates fast arc quenching. Applications include motor circuits, mains, feeders, branch circuits, lighting, heating, transformers, control panels, circuit breaker backup, bus duct, and load centers. It requires half the mounting space of 600VAC Class RK fuses and offers 2-to-1 selectivity. Certified to UL 248-8 (File E2137), DC UL 248, and CSA C22.2 No. 248.8.
  • Class J, Time-Delay Fuse with 60A rating
  • 600VAC / 400VDC voltage rating
  • SmartSpot® visual open fuse indicator
  • 300kA interrupting rating (self-certified, UL witnessed)
  • IEC Type 2 No Damage protection for all load types

Specifications

AC Voltage Rating
600 V
Amperage Rating
60 A
Application
Motor circuits Mains Feeders Branch circuits Lighting, heating & general loads Transformers Control panels Circuit breaker back-up Bus duct Load centers
Body Material
GMG
Brand Name
Mersen
Class
Class J
Color
Orange
Connection
Ferrule
Connection Material
Tin-Plated Copper
Connection Type
Ferrule
Current Rating
60A
Interrupt Rating
200 kA
Material
Fiberglass, Silica
Mounting
Clip
Nema Rating
Class J
Series
Amp-Trap 2000®
Size
2.38 x 1.06;60.452 x 27 in;mm
Size
Class J dimensions
Size
2.38 x 1.06 in
Size
60.452 x 27 mm
Special Features
Non-indicating or solid state SmartSpot visual blown fuse indicator Time-delay for motor starting and transformer inrush 300kA interrupting rating - self-certified, UL witnessed tests Extremely current-limiting for low peak let-thru current Most current-limiting UL class fuse Recommended for Arc Flash energy reduction Small footprint requires less mounting space and allows smaller, more economical fuse blocks Easy 2-to-1 selectivity for prevention of nuisance shutdowns Unique Class J dimensions prevent replacement errors High-visibility orange label gives instant brand recognition Metal-embossed date and catalog number for traceability and lasting identification Fiberglass body provides dimensional stability in harsh industrial settings High-grade silica filler ensures fast arc quenching Optional EI indicator/switch mount for AJT70 to 600 open fuse indication
Standard
AJT (1-600): UL listed to standard 248-8 File E2137 DC listed to UL standard 248 CSA certified to standard C22.2 No. 248.8 IEC 60269-2-1 AJT (70-600) EI: UL listed DC tested to UL standard 248
Sub Brand
Amp-Trap 2000®
Type
Class J
Type Of Indicators
SmartSpot®
Voltage Rating
600VAC/400VDC
Voltage Rating
600VAC 400VDC
Voltage Rating
600 VAC
Package Dimensions (L x W x H)
2.38 in x 1.06 in x 1.06 in
Package Dimensions (L x W x H)
60.452 mm x 27 mm x 27 mm
Package Weight (Imperial)
0.167 lb
Package Weight (Metric)
0.076 kg
Fuse AJT - Class J - Time-delay 600VAC 400VDC 50A Ferrule SmartSpot® Amp-Trap 2000®

AJT50

Fuse AJT - Class J - Time-delay 600VAC 400VDC 50A Ferrule SmartSpot® Amp-Trap 2000®
Fuse AJT - Class J - Time-delay 600VAC 500VDC 8A Ferrule SmartSpot® Amp-Trap 2000®

AJT8

Fuse AJT - Class J - Time-delay 600VAC 500VDC 8A Ferrule SmartSpot® Amp-Trap 2000®
Fuse AJT - Class J - Time-delay 600VAC 500VDC 10A Ferrule SmartSpot® Amp-Trap 2000®

AJT10

Fuse AJT - Class J - Time-delay 600VAC 500VDC 10A Ferrule SmartSpot® Amp-Trap 2000®
Fuse AJT - Class J - Time-delay 600VAC 400VDC 45A Ferrule SmartSpot® Amp-Trap 2000®

AJT45

Fuse AJT - Class J - Time-delay 600VAC 400VDC 45A Ferrule SmartSpot® Amp-Trap 2000®
Fuse AJT - Class J - Time-delay 600VAC 400VDC 25A Ferrule SmartSpot® Amp-Trap 2000®

AJT25

Fuse AJT - Class J - Time-delay 600VAC 400VDC 25A Ferrule SmartSpot® Amp-Trap 2000®

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.