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Mersen A4BT1400 - Fuse A4BT - Class L - Time-Delay 600VAC 500VDC 1400A Blade Amp-Trap®
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Mersen A4BT1400 Fuse A4BT - Class L - Time-Delay 600VAC 500VDC 1400A Blade Amp-Trap®

Alternate Item Number: A4BT1400

UPC: 782001939946


Documents & Media
Technical DrawingLine DrawingSpecification Sheet

Contact for Pricing

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

Overview

The Mersen A4BT1400 Amp-Trap® fuse provides robust circuit protection for industrial applications. This Class L fuse features a time-delay characteristic, essential for loads with high inrush currents. It is rated for 600VAC and 500VDC, with a substantial 1400A current rating. The time-delay function allows the fuse to withstand 500% of its rated current for up to 10 seconds, preventing nuisance tripping during motor startup or other transient overloads while still offering rapid protection against dangerous fault conditions. This fuse is designed for 100% equipment rating, enabling full utilization of circuit capacity. Its high interrupting rating ensures effective protection against overcurrents and short circuits in mains, feeders, and general circuits. The Amp-Trap® design prioritizes operational efficiency and safety, making it a reliable component for critical electrical infrastructure. SKU A4BT1400.
  • Class L, Time-Delay Fuse
  • 600VAC / 500VDC Voltage Rating
  • 1400A Current Rating
  • 10-second time-delay at 500% rated current
  • Suitable for 100% equipment rating

Specifications

AC Voltage Rating
600 V
Amperage Rating
1400 A
Application
Motors Motor controllers Transformers Mains Feeders
Body Material
GMG
Brand Name
Mersen
Class
Class L
Connection
Blade
Connection Material
Silver-Plated Copper
Connection Type
Blade
Current Rating
1400 A
Current Rating
1400A
Interrupt Rating
200 kA
Material
Fuse Material (not explicitly stated)
Mounting
Bolted
Series
A4BT
Size
10.75 x 3 in
Size
273.05 x 76.2 mm
Size
10.75 x 3;273.05 x 76.2 in;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
UL Listed to Standard 248-10, File E2137 CSA Certified to Standard C22.2, No. 248.68 Self-certified for DC per UL248 (601-2000)
Sub Brand
Amp-Trap®
Type
Class L
Voltage Rating
600 VAC
Package Dimensions (L x W x H)
10.75 in x 3 in x 3 in
Package Dimensions (L x W x H)
273.05 mm x 76.2 mm x 76.2 mm
Package Weight (Imperial)
5.920 lb
Package Weight (Metric)
2.685 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 is the voltage rating for A4BT fuses?

A4BT fuses are rated for 600VAC and 500VDC.

What is the ampere range for A4BT fuses?

The ampere range for A4BT fuses is from 200A to 2000A.

Are A4BT fuses suitable for DC applications?

Yes, A4BT fuses are suitable for DC applications up to 500VDC.

What is the interrupting rating (IR) for A4BT fuses?

A4BT fuses have an interrupting rating of 200kA IR AC and 100kA IR DC.

What is the time delay characteristic of A4BT fuses?

A4BT fuses provide a full 10-second time delay at 500% of their fuse rating.

What applications are A4BT fuses suitable for?

A4BT fuses are suitable for protecting mains, feeders, general circuits, motors, motor controllers, and transformers.

What are the physical characteristics of A4BT fuses?

A4BT fuses have a glass melamine body and plated terminals for reliability in harsh environments.

How are A4BT fuses identified?

Catalog numbers are blade-stamped on A4BT fuses for permanent identification.

What safety note is provided regarding Class L fuse substitution?

Class L fuses are dimensioned for one-way interchangeability, meaning a lower ampere rating Class L fuse can substitute for a given Class L fuse.

What are the dimensions for A4BT fuses in the 200-600A range?

For 200-600A, A4BT fuses measure 8-5/8 in length, 2 in width, 5/16 in thickness, 1-5/8 in terminal spacing, and 2-13/32 in height.

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.