Mersen 1MSC108 - Mersen 1SC and 1MSC semiconductor fuse blocks feature modular mounting that offers greater flexibility in adjusting to various fuse lengths. Both stud type and integral box connector versions are offered to allow for user preference of wire terminations. The integral box connector versions also provide for greater heat dissipation. All modular blocks are supplied in pairs but need to be ordered as two items to suit one fuse. Mounting hardware is supplied with the blocks 2500 Volts 400 Amps .25 inch series.
Mersen

1MSC108

Alternate Item Number: 782001331269

UPC: 782001331269

Contact for Pricing

Overview

The Mersen 1MSC108 Modular Semiconductor Fuse Block (SKU: 1MSC108) is engineered for robust overcurrent protection in demanding industrial applications. This specific model features a 600V voltage rating and a 400A current capacity, with a Short Circuit Current Rating (SCCR) of 200kA, ensuring reliable performance under fault conditions. Designed for compatibility with semiconductor fuses, the 1MSC series offers modular mounting, providing significant flexibility to accommodate various fuse lengths and configurations. The integral box connector version, as featured in the 1MSC108, is specifically designed to enhance heat dissipation, crucial for maintaining optimal operating temperatures in high-amperage systems. This design choice contributes to the longevity and stability of the protected semiconductor devices. The 1MSC108 utilizes Al/Cu box connectors and supports a wire range of (2) 250kcmil - #6, with a 1/4" mounting bolt size. It is UL Recognized Component (File E35113) for added assurance of quality and safety. Mounting hardware is supplied with the block, and it is recommended for use with blade-style fuses. The 1MSC series is sold individually, and for a complete fuse block pair, two units must be ordered. This fuse block is manufactured in the USA, underscoring its commitment to quality and domestic production. Trust Mersen for dependable semiconductor fuse protection.
  • Modular mounting for flexible fuse length adjustment
  • Integral box connector for enhanced heat dissipation
  • 600V voltage rating and 400A current capacity
  • 200kA SCCR for reliable fault protection
  • UL Recognized Component (File E35113)

Specifications

Amperage Rating
400 A
Brand Name
Ferraz Shawmut
Connection
Box
Connection Type
Stud type or Integral box connector
Current Rating
400 A
Mounting
Screw Mount
Mounting Type
Modular mounting
Phase
1
Series
1MSC
Size
0.25 inch series
Special Features
Modular two-piece design Compact footprint Stud versions Heat dissipating integral box connector versions Accommodates a large range of semiconductor fuses Rugged phenolic insulators
Standard
UL Recognized Component to standard 4248-1, File E171957
Type
Semiconductor Fuseholders And Blocks
Voltage Rating
600 VAC
Voltage Rating
2500 V
Mersen 1SC and 1MSC semiconductor fuse blocks feature modular mounting that offers greater flexibility in adjusting to various fuse lengths. Both stud type and integral box connector versions are offered to allow for user preference of wire terminations. The integral box connector versions also provide for greater heat dissipation. All modular blocks are supplied in pairs but need to be ordered as two items to suit one fuse. Mounting hardware is supplied with the blocks 600 Volts 600 Amps .375 inch series.

1MSC104

Mersen 1SC and 1MSC semiconductor fuse blocks feature modular mounting that offers greater flexibility in adjusting to various fuse lengths. Both stud type and integral box connector versions are offered to allow for user preference of wire terminations. The integral box connector versions also provide for greater heat dissipation. All modular blocks are supplied in pairs but need to be ordered as two items to suit one fuse. Mounting hardware is supplied with the blocks 600 Volts 600 Amps .375 inch series.
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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.