Mersen K223707 - DIN NH Standard fuse-link gG Size NH1 400VAC 50A live tags Double indicator Body width 30 mm
Mersen

K223707

Alternate Item Number: NH1GG40V50


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Overview

Mersen K223707 DIN NH1 fuse-link gG 400VAC 50A is a high-breaking capacity fuse designed for industrial protection. This full-range breaking capacity fuse-link (type gG) protects cables and equipment from overloads and short-circuit currents up to its rated breaking capacity. The 50A rated current and 400VAC operating voltage make it suitable for low-voltage distribution systems. With a body width of 30mm and double indicator for clear status visibility, it integrates seamlessly into NH fuse systems. Rated power dissipation is optimized below IEC 60269 maximum values, ensuring efficient thermal performance. The live tags and double indicator enhance operational safety and maintenance efficiency. Compatible with NH fuse-bases and replacement devices, this fuse-link is engineered for reliable protection in industrial setups, including motor circuits, transformers, and distribution panels. Installation requires qualified professionals due to non-interchangeability design. The Mersen K223707 is a DIN NH Standard fuse-link, specifically an NH1 size. It operates at 400VAC and has a rated current of 50A. The gG classification indicates its application for general purpose protection. The fuse-link features live tags for safe handling and a double indicator to provide clear visual confirmation of its status. Its body width is 30 mm.
  • Rated current: 50A, Rated voltage: 400VAC
  • Full-range breaking capacity fuse-link (type gG) for cables and equipment protection
  • Body width: 30mm, Double indicator for clear status visibility
  • Live tags for safe handling, Optimized power dissipation below IEC 60269 limits
  • Compatible with NH fuse-bases and replacement devices

Specifications

AC Voltage Rating
400 V
Amperage Rating
50 A
Application
gG: general purpose cable and line protection
Body Material
Ceramic
Brand Name
Mersen
Connection
Plain Blades
Connection Material
Silver-Plated Copper
Connection Type
Blade Contact
Current Rating
50 A
Interrupt Rating
100 kA
Mounting
Clip
Mounting Type
Plug-in
Series
NH
Size
5.31 x 1.18 x 2.52 in
Size
135 x 30 x 64 mm
Size
NH1
Special Features
Dimensions according to DIN 43 620 Parts 1 to 4 Non-isolated gripping lugs Double indicator Lead free contact blades 0 cadmium
Standard
VDE 0636 Part 201 IEC 60269-1 and -2
Type
IEC NH Fuse-Links
Type Of Indicators
Double indicator
Voltage Rating
400 VAC
Package Dimensions (L x W x H)
5.31 in x 1.18 in x 2.52 in
Package Dimensions (L x W x H)
135 mm x 30 mm x 64 mm
Package Weight (Imperial)
0.617 lb
Package Weight (Metric)
0.280 kg
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POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

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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.