Mersen A3T80 Fuse A3T - Class T - Fast-Acting 300VAC 160VDC 80A Blade Amp-Trap®
Alternate Item Number: A3T80
UPC: 782001890162
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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
- 80A current rating with 300VAC/160VDC voltage range
- 200kA AC and 50kA DC interrupting rating for high fault current applications
- Glass melamine body for dimensional stability and environmental resistance
- Permanently stamped catalog numbers on blades for traceability
- Compact design for integration into loadcenters, panelboards, and switchboards
Specifications
AC Voltage Rating | 300 V |
Amperage Rating | 80 A |
Application | Load centers Panelboards Switchboards Circuit breakers Metering centers |
Body Material | GMG |
Brand Name | Mersen |
Class | Class T |
Connection | Blade |
Connection Material | Copper |
Connection Type | Blade |
Current Rating | 80A |
DC Voltage Rating | 160 V |
Interrupt Rating | 200 kA |
Material | Glass Melamine |
Mounting | Bolted |
Series | A3T |
Size | 2.16 x 0.81 in |
Size | 54.864 x 20.574 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 | 300 VAC |
Package Dimensions (L x W x H) | 2.16 in x 0.81 in x 0.81 in |
Package Dimensions (L x W x H) | 54.864 mm x 20.574 mm x 20.574 mm |
Package Weight (Imperial) | 0.075 lb |
Package Weight (Metric) | 0.034 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.Frequently Asked Questions
What is the AC interrupting rating for A6T fuses?
The AC interrupting rating for A6T fuses is 200kA.
What is the DC interrupting rating for A6T fuses?
The DC interrupting rating for A6T fuses is 100kA.
What are the voltage ratings for A3T fuses?
A3T fuses have a voltage rating of 300VAC and 160VDC.
What is the amperage range for A3T fuses?
A3T fuses are available in amperage ratings from 1 to 1200A.
What is the AC interrupting rating for A3T fuses?
The AC interrupting rating for A3T fuses is 200kA.
What is the DC interrupting rating for A3T fuses?
The DC interrupting rating for A3T fuses is 50kA.
What are the voltage ratings for A6T fuses?
A6T fuses have a voltage rating of 600VAC and 300VDC.
What is the amperage range for A6T fuses?
A6T fuses are available in amperage ratings from 1 to 800A.
What are the key features of A3T and A6T fuses?
These fuses are fast-acting, extremely current-limiting, have a small physical size, and include DC ratings.
What applications are A3T and A6T fuses suitable for?
They are suitable for loadcenters, panelboards, switchboards, circuit breakers, and metering centers.
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.









