Mersen A4BY3000-TI - Fuse A4BY - Class L - Time-Delay 600VAC 300VDC 3000A Blade TI Indicator Amp-Trap®
Mersen

A4BY3000-TI

Alternate Item Number: A4BY3000-TI

UPC: 782001939625


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Overview

The Mersen Amp-Trap® A4BY3000-TI is a Class L, time-delay fuse engineered for critical protection applications. With a robust 3000A rating and dual voltage compatibility of 600VAC and 300VDC, this fuse is a preferred choice for safeguarding service entrance equipment, feeder circuits, and circuit breakers. Its 100% rated design allows for continuous operation at its full ampere rating, ensuring reliable performance under demanding conditions. The A4BY series features a minimum 4-second time delay at 500% of its rating, a crucial characteristic that enables it to withstand normal current surges without tripping. This time delay also facilitates effective coordination with ground fault relays, enhancing overall system protection and preventing nuisance outages. The integrated TI indicator provides a visual alert when the fuse has operated, simplifying troubleshooting and maintenance. Manufactured in the USA, the A4BY3000-TI (SKU: A4BY3000-TI) offers dependable protection for industrial and commercial electrical systems.
  • Class L, Time-Delay Fuse
  • 3000A Amperage Rating
  • 600VAC / 300VDC Voltage Rating
  • 100% Rated for Continuous Current
  • TI Indicator for Visual Operation Alert

Specifications

AC Voltage Rating
600 V
Amperage Rating
3000 A
Application
Mains Feeders Circuit Breakers Load centers Panelboards Switchboards Metering Centers
Body Material
GMG
Brand Name
Mersen
Class
Class L
Connection
Blade
Connection Material
Silver-Plated Copper
DC Voltage Rating
300 V
Fuse Class
L
Interrupt Rating
200 kA
Mounting
Bolted
Size
10.75 x 5 in
Size
273.05 x 127 mm
Special Features
Unique dimensions prevent replacement by other fuse classes Blade-stamped catalog numbers for permanent identification Glass melamine body and plated terminals provide superior reliability in harsh environments
Standard
Mersen Self-Certification, UL Listed to Standard 248-10, File E2137 CSA Certified to Standard C22.2, No. 248.10 IEC 269-2-1 DC Tested to UL 248 limits (Mersen Self-Certified)
Sub Brand
Amp-Trap®
Type
Class L
Type Of Indicators
TI Indicator
Voltage Rating
600 VAC
Package Dimensions (L x W x H)
10.75 in x 5 in x 5 in
Package Dimensions (L x W x H)
273.05 mm x 127 mm x 127 mm
Package Weight (Imperial)
19.300 lb
Package Weight (Metric)
8.754 kg
Fuse A4BY - Class L - Time-Delay 600VAC 300VDC 800A Blade Amp-Trap®

A4BY800

Fuse A4BY - Class L - Time-Delay 600VAC 300VDC 800A Blade Amp-Trap®
Fuse A4BY - Class L - Time-Delay 600VAC 300VDC 1200A Blade Amp-Trap®

A4BY1200

Fuse A4BY - Class L - Time-Delay 600VAC 300VDC 1200A Blade Amp-Trap®
Fuse A4BY - Class L - Time-Delay 600VAC 300VDC 600A Blade Amp-Trap®

A4BY600

Fuse A4BY - Class L - Time-Delay 600VAC 300VDC 600A Blade Amp-Trap®
Fuse A4BQ - Class L - Time-Delay 600VAC 500VDC 700A Blade TA Indicator Amp-Trap 2000®

A4BQ700-TA

Fuse A4BQ - Class L - Time-Delay 600VAC 500VDC 700A Blade TA Indicator Amp-Trap 2000®

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.