Mersen M100J40N - UL 98 Fusible Switch 600VAC Class J 100A 4-Pole Configuration: 4-0-N
Mersen

M100J40N

Alternate Item Number: M100J40N

Contact for Pricing

Overview

The Mersen M100J40N is a 4-pole UL 98 Fusible Disconnect Switch rated for 600VAC and 100A, designed for reliable load-break and load-make operations. Conforming to IEC 60947-3 and bearing the CE mark, this switch offers robust safety and functionality. Its compact footprint and modular design allow for flexible handle placement. Safety features include interlocked fuse doors that prevent opening in the "ON" position and a double-break mechanism that isolates both fuse clips from voltage during fuse replacement. The "Test" position enables auxiliary contact actuation without main power, and integrated power taps facilitate energizing CPT or surge devices without separate terminal blocks. This switch is compatible with Class J fuses, known for their excellent current-limiting protection and unique dimensions that prevent substitution with lower-rated fuses. It is UL listed (File E191605) and CSA certified, ensuring compliance with stringent electrical standards. The M100J40N is ideal for feeder circuits, panelboards, and switchboards requiring dependable circuit protection and isolation. Available accessories include various ergonomic handles and terminal lugs. Origin: Spain.
  • UL 98 Listed and CE Marked for safety and compliance
  • 100A, 600VAC rating with Class J fuse compatibility
  • 4-pole configuration (4-0-N) for versatile circuit control
  • Double-break design for safe fuse replacement
  • Compact footprint with modular handle placement

Specifications

AC Voltage Rating
600 V
Amperage Rating
100 A
Application
Main disconnects Short circuit protection Electrical isolation Overcurrent protection Safety switch
Brand Name
Mersen
Connection
Terminal
DC Voltage Rating
250 V
Maximum Operating Temperature
40 C
Minimum Operating Temperature
-5 C
Mounting Type
Direct Screw Mount
Number Of Poles
4
Size
6.77 x 7.15 x 4.11 in
Size
171.958 x 181.61 x 104.394 mm
Special Features
Multiple Configurations Power taps Adjustable shaft depth Fuse monitoring Double break, isolating live and load side of fuse Interlocked fuse doors
Standard
All UL Fusible Disconnect Switches meet UL & CSA requirements UL listed guide WHTY, File E191605 for UL 98 (ratings from 30A to 1200A) IEC 60947-3
Type
UL 98 Fusible
Package Dimensions (L x W x H)
6.77 in x 7.15 in x 4.11 in
Package Dimensions (L x W x H)
171.958 mm x 181.61 mm x 104.394 mm
Package Weight (Imperial)
3.960 lb
Package Weight (Metric)
1.796 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.