Mersen LUG400 - Mersen’s lugs enable the user to attach wires to our switches. We offer a number of configurations based on ampacity and wire size. Jumper bars are used for our DC switches. 400 Amps
Mersen

LUG400

Alternate Item Number: 3605340558777

Contact for Pricing

Overview

Mersen LUG400 is a precision-engineered terminal lug designed for secure 400A wire connections in industrial switch applications, including Mersen’s M400 series switches. Rated for 400A at 480VAC, this lug accommodates wire sizes from #2 AWG to 600MCM, ensuring compatibility with heavy-duty industrial wiring. Constructed from high-conductivity copper with corrosion-resistant plating, the LUG400 delivers consistent electrical performance in demanding environments, from power distribution to renewable energy systems. Its UL-listed design meets rigorous safety standards, while the threaded terminal design simplifies installation and maintenance. The lug is optimized for use with Mersen’s DC switches (e.g., MD400UV12) and supports both front and side-operated switch configurations. With a maximum operating temperature of 140°F and IP66/IP69/IP69K environmental ratings, the LUG400 is built to withstand harsh conditions, including NEMA Type 4X enclosures. The LUG400 is specifically designed to integrate seamlessly with Mersen’s jumper bars for DC switch applications, ensuring reliable current transfer in high-ampacity systems. Its robust construction and compliance with UL standards make it a trusted choice for critical industrial and commercial electrical installations where performance and safety are paramount.
  • 400A ampacity rating for heavy-duty industrial applications
  • Accommodates wire sizes from #2 AWG to 600MCM
  • UL-listed for safety and compliance with industrial standards
  • Corrosion-resistant copper construction with threaded terminal design
  • Compatible with Mersen M400 series switches and DC applications

Specifications

Amperage Rating
400 A
Application
for use with Mersen switches
Brand Name
Ferraz Shawmut
Connection Type
Screw/Wire Connection
Current Rating
400 A
Material
Metal
Series
LUG
Series
LUG400
Special Features
Mersen’s lugs enable the user to attach wires to our switches. We offer a number of configurations based on ampacity and wire size. Jumper bars are used for our DC switches.
Type
Accessories for Switches
Voltage Rating
600 VAC
Package Dimensions (L x W x H)
1.34 IN x 1.18 IN x 1.56 IN
Package Dimensions (L x W x H)
3.4036 cm x 2.9972 cm x 3.9624 cm
Package Weight (Imperial)
1.320 L
Package Weight (Metric)
0.599 kg
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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.