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Mersen A6T225 - Fuse A6T - Class T - Fast-Acting 600VAC 300VDC 225A Blade Amp-Trap®
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Mersen A6T225 Fuse A6T - Class T - Fast-Acting 600VAC 300VDC 225A Blade Amp-Trap®

Alternate Item Number: A6T225

UPC: 782001891497


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Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The Mersen A6T225 is a Class T fast-acting fuse designed for high-performance industrial applications requiring precise overcurrent protection. Rated at 225A with a voltage rating of 600VAC and 300VDC, this Amp-Trap® fuse delivers exceptional current-limiting capability to minimize damage during fault conditions. Its compact blade design ensures compatibility with Class T fuse blocks while preventing substitution with lower-rated fuses due to unique dimensional constraints. Constructed with a glass melamine body, the A6T225 provides superior dimensional stability and resistance to harsh environments. The catalog number is permanently stamped into the blade for traceability and permanent identification. With an interrupting rating of 200kA AC and 100kA DC, this fuse is ideal for demanding applications in loadcenters, panelboards, switchboards, and metering centers. Key benefits include low peak let-thru current to protect sensitive equipment, small physical size for flexible design integration, and compliance with UL 248-15 and CSA C22.2 No. 248.15 standards. The A6T225 is part of Mersen’s Amp-Trap® series, trusted for reliability in industrial power distribution systems.
  • 225A current rating with 600VAC/300VDC voltage rating
  • Fast-acting design with 200kA AC and 100kA DC interrupting rating
  • Glass melamine body for superior dimensional stability
  • Blade-stamped catalog number for permanent identification
  • UL 248-15 and CSA C22.2 No. 248.15 certified

Specifications

AC Voltage Rating
600 V
Amperage Rating
225 A
Application
Load centers Panelboards Switchboards Circuit breakers Metering centers
Body Material
GMG
Brand Name
Mersen
Class
Class T
Connection
Blade
Connection Material
Copper
DC Voltage Rating
300 V
Interrupt Rating
200 kA
Mounting
Bolted
Size
3.62 x 1.62 in
Size
91.948 x 41.148 mm
Special Features
Extremely current-limiting for low peak let-thru current Unique dimensions prevent replacement by other fuse classes Blade-stamped catalog numbers for permanent identification Small physical size for greater design flexibility
Standard
UL listed to standard 248-15 File E2137 CSA certified to standard C22.2 no. 248.15 DC listed to UL standard 248
Sub Brand
Amp-Trap®
Type
Class T
Voltage Rating
600 VAC
Package Dimensions (L x W x H)
3.62 in x 1.62 in x 1.62 in
Package Dimensions (L x W x H)
91.948 mm x 41.148 mm x 41.148 mm
Package Weight (Imperial)
0.504 lb
Package Weight (Metric)
0.229 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.

Frequently Asked Questions

What are the voltage and current ratings for A6T fuses?

A6T fuses are rated for 600VAC / 300VDC and have an amperage range of 1 to 800A.

What is the interrupting rating for A6T fuses?

A6T fuses have an interrupting rating of 200kA I.R. AC and 100kA I.R. DC.

What makes A6T fuses unique compared to other fuse classes?

A6T fuses have unique dimensions that prevent substitution by fuses with lower voltage ratings or current-limiting capability.

Are A6T fuses UL listed and CSA certified?

Yes, A6T fuses are UL listed to standard 248-15 (File E2137) and CSA certified to standard C22.2 no. 248.15.

What are the DC ratings for A6T fuses?

A6T fuses have DC ratings of 300VDC and an interrupting rating of 100kA I.R. DC.

What materials are used for the body of A6T fuses?

A6T fuses have glass melamine bodies for superior dimensional stability.

How can I identify the catalog number on an A6T fuse?

Catalog numbers are stamped into the blades of A6T fuses for permanent identification.

What are the typical applications for A6T fuses?

A6T fuses are suitable for loadcenters, panelboards, switchboards, circuit breakers, and metering centers.

What is the current-limiting capability of A6T fuses?

A6T fuses are extremely current-limiting, providing low peak let-thru current.

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.