Mersen A240T1E - Medium Voltage Potential Transformer Fuse 2400VAC 1A Ferrule Amp-Trap®
Mersen

A240T1E

Alternate Item Number: A240T1E

UPC: 782001800420


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Overview

The Mersen A240T1E Amp-Trap® medium voltage potential transformer fuse provides primary winding protection for potential transformers (PT) and control power transformers (CPT) in industrial applications. Rated for 2400VAC, this ferrule-mounted fuse offers a 1A current rating with a high interrupting rating of 50kA RMS symmetrical, ensuring superior equipment protection against overcurrent conditions. Its compact ferrule design (0.812" diameter, 4.625" length) allows for standard clip mounting with interchangeability across brands, reducing downtime during replacements. The non-venting design ensures silent operation, while the metal-embossed catalog number and manufacturing date provide durable identification. This fuse is ideal for primary protection in medium-voltage systems up to 2.4kV, where reliable, current-limiting performance is critical. Compatible with standard fuse clips, the A240T1E is UL-recognized and manufactured in the US by Mersen, a leader in electrical protection solutions.
  • 2400VAC rated for medium voltage potential transformer protection
  • 1A current rating with 50kA RMS symmetrical interrupting rating
  • Ferrule mounting for standard clips and brand interchangeability
  • Non-venting design for silent operation
  • Metal-embossed catalog number and manufacturing date for traceability

Specifications

AC Voltage Rating
2400 V
Amperage Rating
1 A
Application
Primary protection for potential transformers (PT) or control power transformers (CPT)
Body Material
GMG
Brand Name
Mersen
Connection
Ferrule
Connection Material
Tin-Plated Copper
Interrupt Rating
50 kA
Mounting
Clip
Size
4.63 x 0.81 in
Size
117.602 x 20.625 mm
Special Features
Ferrule mounting for standard clips and interchangeability with other brands of fuses Current-limiting for superior equipment protection Non-venting for silent operation Metal embossed catalog number and manufacturing date for lasting identification Blown-fuse indicator to give positive identification of open fuse fuse is available on the 9F60 series
Sub Brand
Amp-Trap®
Type
Potential Transformer Protection Fuses
Voltage Rating
2400 VAC
Package Dimensions (L x W x H)
4.63 in x 0.81 in x 0.81 in
Package Dimensions (L x W x H)
117.602 mm x 20.625 mm x 20.625 mm
Package Weight (Imperial)
0.280 lb
Package Weight (Metric)
0.127 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.

LCC5

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.