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Overview
- Class T, fast-acting fuse for high current limitation
- 50A rating at 300VAC / 160VDC
- 200kA AC interrupting rating, 50kA DC interrupting rating
- Unique dimensions prevent improper substitution
- Durable glass melamine body with permanently stamped catalog numbers
Specifications
AC Voltage Rating | 300 V |
Amperage Rating | 50 A |
Application | Load centers Panelboards Switchboards Circuit breakers Metering centers |
Body Material | GMG |
Brand Name | Mersen |
Class | Class T |
Connection | Ferrule |
Connection Material | Copper |
Connection Type | Ferrule |
Current Rating | 50A |
DC Voltage Rating | 160 V |
Interrupt Rating | 200 kA |
Material | Glass Melamine |
Mounting | Clip |
Series | A3T |
Size | 0.88 x 0.56 in |
Size | 22.352 x 14.224 mm |
Size | Small |
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) | 0.88 in x 0.56 in x 0.56 in |
Package Dimensions (L x W x H) | 22.352 mm x 14.224 mm x 14.224 mm |
Package Weight (Imperial) | 0.020 lb |
Package Weight (Metric) | 0.009 kg |
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Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
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 is the interrupting rating for AC circuits?
The Mersen A3T50 fuse has an interrupting rating of 200kA for AC circuits.
What is the interrupting rating for DC circuits?
The Mersen A3T50 fuse has an interrupting rating of 50kA for DC circuits.
What voltage ratings does the A3T50 fuse support?
The A3T50 fuse is rated for 300VAC and 160VDC.
What is the amp rating of the Mersen A3T50 fuse?
The Mersen A3T50 fuse has an amp rating of 50A.
What material is the body of the A3T50 fuse made from?
The A3T50 fuse features a glass melamine body for superior dimensional stability.
How are catalog numbers identified on the A3T50 fuse?
Catalog numbers are permanently stamped into the blades of the A3T50 fuse for easy identification.
What are the primary applications for the A3T50 fuse?
The A3T50 fuse is ideal 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.