Mersen M211979 - DIN Fuse base Neozed Size D02 400VAC 63A 3-Pole without touch protection DIN Rail mounting Clamp Strap / Screw
Mersen

M211979

Alternate Item Number: 01731.452000


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Overview

The Mersen M211979 DIN Fuse Base Neozed D02 is a high-reliability, low-voltage fuse base designed for 400VAC/250VDC networks. This 3-pole fuse base is rated for 63A continuous current and is engineered for DIN rail mounting without touch protection, making it ideal for industrial and commercial distribution units where non-specialized personnel may access or replace fuse-links. The D02 size accommodates cable cross-sections from 1.5 to 25 mm², supported by clamp straps with 2 screws for secure terminations. This system is part of Mersen’s Neozed D0 generation, the latest evolution of the German DIN standard screw fuse system, offering improved safety and performance over legacy designs. The fuse base is designed to work with D0 fuse-links, which provide overcurrent and short-circuit protection up to their nominal breaking capacity, safeguarding cables, power lines, and connected equipment from dynamic effects of high short-circuit currents. The unit weighs approximately 42.6g and is optimized for snap-on DIN rail mounting, ensuring quick installation and maintenance. Compatible with 400VAC networks, it is widely used in low-voltage distribution panels, motor control centers, and industrial control systems where robust, code-compliant overcurrent protection is required. The M211979 is manufactured in the USA and distributed by Gross Automation, ensuring traceability and support.
  • Rated for 400VAC/250VDC networks with 63A continuous current
  • 3-pole configuration with clamp strap/screw terminal for 1.5–25 mm² cables
  • DIN rail mounting without touch protection for easy access and replacement
  • Part of Mersen’s Neozed D0 system, designed for low-voltage distribution safety
  • Compact design (42.6g) with snap-on DIN rail mounting for quick installation

Specifications

AC Voltage Rating
400 V
Amperage Rating
63 A
Application
House incoming units Meter distribution units Distribution cabinets Installation cabinets Fuse boxes
Brand Name
Mersen
Connection
Clamp Strap / Screw
Material
Ceramic
Mounting
DIN Rail
Number Of Poles
3
Size
3.19 x 2.26 x 1.63;81 x 57.5 x 41.5 in;mm
Special Features
Insulated body suitable for high mechanical and thermal impacts Top and bottom contacts made of nickel plated copper alloy Safe cut-off short circuits and over currents due to special design of fuse element Clear indication of operation condition due coloured indicator un top contact Low power dissipation Optimized size Resistant to aging
Standard
DIN VDE 0636-3 DIN EN 60715
Sub Brand
Neozed®
Type
IEC D0 & D Fuse Bases
Voltage Rating
400 VAC
Package Dimensions (L x W x H)
3.19 in x 2.26 in x 1.63 in
Package Dimensions (L x W x H)
81 mm x 57.5 mm x 41.5 mm
Package Weight (Imperial)
0.556 lb
Package Weight (Metric)
0.252 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.