Mersen T235169 - DIN NH Standard fuse-link gG Size NH3 500VAC 250VDC 125A live tags Double indicator Body width 52 mm
Mersen

T235169

Alternate Item Number: NH3GG50V125


Documents & Media
Specification Sheet

Contact for Pricing

Overview

The Mersen T235169 is a high-capacity DIN NH Standard fuse-link, specifically a gG type, designed for robust protection in industrial electrical systems. Rated for 500VAC and 250VDC, this fuse-link features a 125A current rating and is housed in a Size NH3 body with a width of 52 mm. It is equipped with double indicators for clear status visualization and live gripping-lugs for safe and reliable contact. The gG classification signifies a full-range breaking capacity, meaning it can interrupt any current surge from the lowest fusing current up to its rated breaking capacity. This makes it suitable for direct use as sole protection for cables and equipment, safeguarding them from both minor overloads and severe short-circuit events. The NH system, to which this fuse-link belongs, is a plug-in fuse system comprising a fuse-base, fuse-link with blade contacts, and a fuse-link replacement device. Due to the inherent design of the NH system, which does not guarantee non-interchangeability of rated current, handling and replacement must be performed by a qualified professional. This Mersen fuse-link is engineered to protect electrical devices and industrial setups from the electrodynamic effects of very high short-circuit currents, ensuring operational continuity and safety. Its construction and specifications make it an essential component in power distribution and control panels where reliable overcurrent protection is paramount. Manufactured in France (FR), SKU T235169.
  • Mersen NH3GG50V125 Fuse-link, gG type
  • Rated for 500VAC and 250VDC operation
  • 125A current rating for high-capacity protection
  • Size NH3 with 52 mm body width
  • Features double indicator and live gripping-lugs

Specifications

AC Voltage Rating
500 V
Amperage Rating
125 A
Application
gG: general purpose cable and line protection
Body Material
Ceramic
Brand Name
Mersen
Connection
Plain Blades
Connection Material
Silver-Plated Copper
DC Voltage Rating
250 V
Interrupt Rating
120 kA
Mounting
Clip
Size
5.91 x 2.05 x 3.5 in
Size
150 x 52 x 89 mm
Special Features
Dimensions according to DIN 43 620 parts 1 to 4 Non-isolated gripping lugs Double indicator 0 cadmium
Standard
VDE 0636 Part 201 IEC 60269-1 and -2
Type
IEC NH Fuse-Links
Type Of Indicators
Double indicator
Package Dimensions (L x W x H)
5.91 in x 2.05 in x 3.5 in
Package Dimensions (L x W x H)
150 mm x 52 mm x 89 mm
Package Weight (Imperial)
1.433 lb
Package Weight (Metric)
0.650 kg
DIN NH Standard fuse-link gG Size NH0 500VAC 250VDC 125A live tags Double indicator Body width 30 mm

P222492

DIN NH Standard fuse-link gG Size NH0 500VAC 250VDC 125A live tags Double indicator Body width 30 mm
DIN NH Standard fuse-link gG Size NH3 500VAC 250VDC 250A live tags Double indicator Body width 52 mm

C211602

DIN NH Standard fuse-link gG Size NH3 500VAC 250VDC 250A live tags Double indicator Body width 52 mm
DIN NH Standard fuse-link gG Size NH3 500VAC 250VDC 315A live tags Double indicator Body width 52 mm

L213151

DIN NH Standard fuse-link gG Size NH3 500VAC 250VDC 315A live tags Double indicator Body width 52 mm
DIN NH Standard fuse-link gG Size NH000 500VAC 250VDC 40A live tags Double indicator Body width 21mm

N212463

DIN NH Standard fuse-link gG Size NH000 500VAC 250VDC 40A live tags Double indicator Body width 21mm
DIN NH Standard fuse-link gG Size NH000 500VAC 250VDC 35A live tags Double indicator Body width 21mm

C211947

DIN NH Standard fuse-link gG Size NH000 500VAC 250VDC 35A live tags Double indicator Body width 21mm

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.