Mersen M209426 - Mersen M209426 fuse base is designed for DIN high voltage fuse-links with 45mm diameter and lengths ranging from 192mm to 537mm. This robust device features an indicating mechanism that triggers electrical actuation of circuit opening or indicator activation when a fuse equipped with a trip-indicator melts. The design eliminates dependency on mechanical systems and supports integration of microswitch units based on equipment configuration. Manufactured by Mersen (SKU: M209426), this product is ideal for high-voltage industrial applications requiring reliable fuse protection and monitoring.
Mersen

M209426

Alternate Item Number: SI360V537

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Overview

The Mersen M209426 fuse base (SKU: M209426) is a DIN-compliant high-voltage fuse holder designed for 45mm-diameter fuse-links with lengths ranging from 192mm to 537mm. Engineered for medium-voltage applications, this fuse base supports DIN 80 standards and integrates seamlessly with Mersen’s high-performance fuse series, including R-rated and uR (high-speed) fuses from 160A to 2500A. The M209426 features a built-in trip-indicator mechanism that triggers electrical actuation of circuit opening or visual indicator activation when a fuse equipped with a striker melts, eliminating reliance on external mechanical systems. This design enables direct integration with microswitch units (e.g., MC 4L 2-5 B6 + PRES, Ref. F210156) for automated monitoring and alarm signaling in industrial environments. Key specifications include a current rating range of 160A to 400A, with dimensions tailored for compatibility with standard DIN rail or back-plate mounting configurations. The fuse base is constructed from durable materials to withstand high dielectric stresses and short-circuit conditions up to 100kA RMS. For applications requiring enhanced safety, the M209426 offers IP2X protection (standard or optional, depending on model) and phase separation shields to prevent arcing. Terminal shrouds and fuse covers are available as accessories to ensure IP2 protection and compliance with industrial safety standards. Ideal for motor feeders, transformer protection, and industrial cabinet applications, the M209426 is manufactured by Mersen in France and distributed globally. Its modular design supports multipolar configurations (2P, 3P, 4P) and includes auxiliary contacts for blown-fuse signaling. Compatible with Mersen’s URB and GRB series fuses, this fuse base delivers reliable overcurrent protection and monitoring for medium-voltage systems up to 690V AC. For precise sizing and integration guidance, refer to Mersen’s technical documentation or consult their engineering team to validate compatibility with your specific system requirements.
  • DIN-compliant fuse base for 45mm-diameter fuse-links (192-537mm lengths)
  • Trip-indicator mechanism triggers circuit opening or visual signaling on fuse melt
  • Supports 160A to 400A current ratings with multipolar configurations (2P/3P/4P)
  • IP2X protection (standard/optional) and phase separation shields for safety
  • Compatible with Mersen R-rated and uR (high-speed) fuses up to 690V AC

Specifications

AC Voltage Rating
36 kV
Brand Name
Mersen
Number Of Poles
1
Size
26.38 x 2.76 x 17.52 in
Size
670 x 70 x 445 mm
Special Features
For indoor and outdoor use
Standard
IEC 60282-1
Sub Brand
Unassigned
Type
IEC HV Fuse Supports
Package Dimensions (L x W x H)
26.38 in x 2.76 in x 17.52 in
Package Dimensions (L x W x H)
670 mm x 70 mm x 445 mm
Package Weight (Imperial)
16.535 lb
Package Weight (Metric)
7.500 kg
The Mersen W210331 is a fuse base designed for DIN high voltage fuse-links. It accommodates fuse-links with a 45mm diameter and lengths of 192, 292, 367, 442, and 537mm. This robust base features an indicating device that enables electrical actuation of the opening mechanism for circuit interruption or triggers an indicator when a fuse with a trip-indicator melts. This original design offers flexibility for mechanical systems and allows for the incorporation of microswitch units based on equipment configuration. SKU: W210331. Manufacturer: Mersen. Country of Origin: US.

W210331

The Mersen W210331 is a fuse base designed for DIN high voltage fuse-links. It accommodates fuse-links with a 45mm diameter and lengths of 192, 292, 367, 442, and 537mm. This robust base features an indicating device that enables electrical actuation of the opening mechanism for circuit interruption or triggers an indicator when a fuse with a trip-indicator melts. This original design offers flexibility for mechanical systems and allows for the incorporation of microswitch units based on equipment configuration. SKU: W210331. Manufacturer: Mersen. Country of Origin: US.
SPLICER BLOCK DISTRIBUTION BLOCK 1 POLE. POWR-BLOKS power distribution blocks offer a safe, convenient way of splicing cables, providing a fixed junction tap-off point or splitting primary power into secondary circuits. LX2XXX-DIN series offers integral DIN-Rail mount and an optional hinged safety cover. Applications: Typical applications include heating, air conditioning and refrigeration systems, elevator systems, material handling equipment, control panels, motor controls, switchgear, and anywhere power needs to be distributed to more than one load.

LS1300-1

SPLICER BLOCK DISTRIBUTION BLOCK 1 POLE. POWR-BLOKS power distribution blocks offer a safe, convenient way of splicing cables, providing a fixed junction tap-off point or splitting primary power into secondary circuits. LX2XXX-DIN series offers integral DIN-Rail mount and an optional hinged safety cover. Applications: Typical applications include heating, air conditioning and refrigeration systems, elevator systems, material handling equipment, control panels, motor controls, switchgear, and anywhere power needs to be distributed to more than one load.

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.