Mersen A6Y400-58 - Fuse A6Y 600VAC 400A Type 58 Blade Amp-Trap®
Mersen

A6Y400-58

Alternate Item Number: A6Y400-58

UPC: 782001907679


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Overview

The Mersen A6Y400-58 is a Type 58 Blade Amp-Trap fuse, engineered for robust overcurrent protection. It is rated for 600 Volts AC and 400 Amps. This fuse offers significant current limitation capabilities across both AC and DC power systems. Specifically, it is rated for 500 Volts DC, with a capacity of up to 600 Amps in DC applications. The Type 58 designation signifies unique rejection dimensions, a critical design feature that ensures it cannot be interchanged with Class H or Class K fuses, thereby preventing incorrect fuse installations and potential equipment damage. Manufactured in the United States by Mersen, a recognized leader in industrial protection solutions, this fuse is a component of the esteemed Form 600 series. The Form 600 series represents the original generation of current-limiting fuses, established prior to the formalization of many industry standards. The blade connection type of the A6Y400-58 facilitates a secure and reliable installation within compatible fuse holders. This fuse is exceptionally well-suited for demanding industrial power distribution networks, motor control centers, and a variety of other high-current applications where dependable and precise overcurrent protection is paramount for safeguarding equipment and ensuring operational continuity.
  • Rated 600V AC and 400A current for industrial applications
  • 500V DC rating up to 600A for versatile protection
  • Type 58 blade design with rejection dimensions for safety
  • Part of Mersen Form 600 series—original current-limiting fuses
  • Manufactured in the US for reliable performance

Specifications

AC Voltage Rating
600 V
Amperage Rating
400 A
Body Material
GMG
Brand Name
Mersen
Connection
Blade
Interrupt Rating
200 kA
Mounting
Clip
Size
8.63 x 2 in
Size
219.202 x 50.8 mm
Standard
UL Recognized Component File E60314 DC Tested to UL248-1 (1-600A)
Sub Brand
Amp-Trap®
Type
DC Fuses
Package Dimensions (L x W x H)
8.63 in x 2 in x 2 in
Package Dimensions (L x W x H)
219.202 mm x 50.8 mm x 50.8 mm
Package Weight (Imperial)
1.940 lb
Package Weight (Metric)
0.880 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.
9F61 Size B Clips 1.6in

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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.