Mersen W217576 - The NH system is classified among plug-in fuse systems and is composed of: • fuse-base (possibly including terminal covers and phase barriers) • fuse-link with blade contact • fuse-link replacement device (LV HRC fuse puller) Since the design of this system cannot guarantee non-interchangeability of rated current it must be handled by a qualified professional. Type gG NH fuse-links are full range breaking capacity fuse-links and are used to protect cables and equipment. They can interrupt any current surge, from the lowest fusing current up to their breaking capacity, and so can be used alone as protection. They also protect electrical devices and industrial set-ups from the electrodynamic effects of very high short-circuit currents. 500 Volts 630 amps gG NH4 series.
Mersen

W217576

Alternate Item Number: 4086500032358

Contact for Pricing

Overview

The Mersen W217576 is a gG NH4 fuse-link, rated for 500 Volts and 630 Amps, designed for robust industrial electrical protection. As part of Mersen's NH plug-in fuse system, this fuse-link offers full-range breaking capacity, capable of interrupting any current surge from the lowest fusing current up to its breaking capacity. This makes it suitable for use as a sole protective device for cables and equipment. It effectively safeguards electrical devices and industrial setups from the electrodynamic effects of very high short-circuit currents. The NH system's design necessitates handling by a qualified professional to ensure non-interchangeability of rated current, enhancing system safety. The gG type is specifically designed for cable and equipment protection, providing comprehensive safeguarding against overcurrents and short circuits. This fuse-link is essential for applications requiring reliable protection in manufacturing plants, power distribution systems, renewable energy installations, oil & gas facilities, and data centers. Mersen is a global leader in electrical protection, and the W217576 exemplifies their commitment to quality and safety standards. Installation must be performed by qualified electricians following Mersen's guidelines and local electrical codes. Choosing the W217576 ensures long-term reliability, reduces the risk of equipment damage and unplanned outages, and contributes to operational continuity in critical industrial environments.
  • Mersen W217576 gG NH4 fuse-link
  • Rated 500 Volts, 630 Amps
  • Full-range breaking capacity for comprehensive protection
  • Safeguards cables, equipment, and industrial setups
  • Designed for use with Mersen NH plug-in fuse system

Specifications

Amperage Rating
630 A
Application
gG: General purpose (protection of cables and LV-networks)
Brand Name
Ferraz Shawmut
Connection
Blade
Connection Type
Plug-in
Current Rating
630 A
Interrupt Rating
120 kA
Mounting
Clip
Series
gG NH4
Size
NH4
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
IEC/EN 60269-1 and -2 VDE 0636 Part 201
Type
IEC NH Fuse-Links
Voltage Rating
500 VAC
Voltage Rating
500 V V
Package Dimensions (L x W x H)
7.87 IN x 4.09 IN x 3.5 IN
Package Dimensions (L x W x H)
19.9898 cm x 10.3886 cm x 8.89 cm
Package Weight (Imperial)
4.800 L
Package Weight (Metric)
2.177 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.