Mersen 1MSC103 - 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 400 Amps .375 inch series.
Mersen

1MSC103

Alternate Item Number: 782001272777

UPC: 782001272777

Contact for Pricing

Overview

The Mersen 1MSC103 semiconductor fuse block, part of the robust 1SC/1MSC series, is engineered for superior protection and operational flexibility in demanding industrial electrical systems. This modular fuse block is designed to accommodate a wide range of fuse lengths, offering unparalleled adaptability for various applications. Its innovative modular mounting system allows for precise adjustments, ensuring a secure and efficient fit for your specific semiconductor protection needs. Available in both stud-type and integral box connector configurations, the 1MSC103 caters to diverse user preferences for wire terminations. The integral box connector versions are particularly advantageous, providing enhanced heat dissipation capabilities. This feature is critical for high-current applications where thermal management is paramount to maintaining system integrity and preventing premature component failure. By efficiently dissipating heat, these blocks contribute to the longevity and reliability of your sensitive semiconductor devices. Each Mersen 1MSC103 fuse block is rated for 600 Volts and 400 Amps, making it suitable for heavy-duty industrial environments. The 0.375-inch series designation further specifies its compatibility and physical dimensions within the Mersen product ecosystem. These fuse blocks are supplied in pairs, with each pair designed to house a single fuse. To ensure proper installation, two units must be ordered to protect one fuse. Crucially, all necessary mounting hardware is included with the blocks, simplifying the installation process and reducing the need for additional parts procurement. This thoughtful inclusion streamlines project timelines and ensures a professional, secure installation. Key features and benefits of the Mersen 1MSC103 include: * **Modular Mounting:** Offers exceptional flexibility for adjusting to various fuse lengths, ensuring compatibility with a broad spectrum of semiconductor fuses. * **Dual Connection Options:** Available in stud-type and integral box connector versions, allowing users to select their preferred wire termination method. * **Enhanced Heat Dissipation:** Integral box connector models provide superior thermal management, crucial for high-power applications. * **High Performance Ratings:** Rated for 600V and 400A, suitable for robust industrial power distribution and protection. * **Complete Installation Package:** Supplied in pairs with all required mounting hardware for straightforward setup. Mersen is a globally recognized leader in electrical protection and power management solutions. Their commitment to quality, innovation, and reliability is evident in the design and manufacturing of the 1SC/1MSC series fuse blocks. Professionals across industries such as renewable energy, industrial automation, transportation, and power conversion rely on Mersen products for uncompromising performance and safety. The 1MSC103 is an excellent choice for engineers and technicians seeking dependable, high-quality fuse protection for their critical semiconductor components, ensuring operational continuity and safeguarding valuable equipment from electrical faults. Its robust construction and thoughtful design make it a cornerstone for any advanced electrical protection strategy.
  • Mersen 1MSC103 semiconductor fuse block for reliable electrical protection.
  • 600V voltage rating and 400A current rating for industrial applications.
  • Modular mounting offers flexible adjustments for various fuse lengths.
  • Available in stud-type or integral box connector versions for user preference.
  • Integral box connectors enhance heat dissipation for improved performance.

Specifications

Amperage Rating
400 A
Brand Name
Ferraz Shawmut
Connection
Box
Mounting
Screw Mount
Phase
1
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
Package Dimensions (L x W x H)
0 IN x 0 IN x 0 IN
Package Weight (Imperial)
0.000 L
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.

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.
3P fuse base S2 XL scew mounting

65PV1112

3P fuse base S2 XL scew mounting
571 FUSEHOLDER W/ LEADS & HEAT SHRINK

571027LHO

571 FUSEHOLDER W/ LEADS & HEAT SHRINK
Control Transformer Accessories - Secondary Fuse Kit 3

SFK3

Control Transformer Accessories - Secondary Fuse Kit 3
Features: For 1/4 X 1 1/4 IN Glass/Ceramic Fuse, Application: Control Transformer

FB2

Features: For 1/4 X 1 1/4 IN Glass/Ceramic Fuse, Application: Control Transformer
Fuse Holder, 600V Threaded

18880300002

Fuse Holder, 600V Threaded
NEMA power devices. GPC accessory kits. NEMA combo starters. FUSEHOLDER 3 POLE REJECTION.

3007N32P009

NEMA power devices. GPC accessory kits. NEMA combo starters. FUSEHOLDER 3 POLE REJECTION.

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.