Mersen D1028724 DIN NH Standard fuse-link gTr Size NH4a 400VAC 577A 400KVA live tags Center indicator…
Alternate Item Number: NH4AGTR400KVA
Documents & Media
Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- Mersen NH Standard fuse-link, size NH4a
- Transformer protection with 'gTr' time/current characteristic
- 400 VAC voltage rating and 577 A current rating
- Capable of 1.3x nominal current for 10 hours, 1.5x for 2 hours
- Features live tags and a center indicator for status monitoring
Specifications
AC Voltage Rating | 400 V |
Amperage Rating | 577 A |
Application | Protection of transformers |
Body Material | Ceramic |
Brand Name | Mersen |
Connection | Plain Blades |
Connection Material | Silver-Plated Copper |
Interrupt Rating | 100 kA |
Mounting | Clip |
Size | 7.87 x 2.87 x 4.8 in |
Size | 200 x 73 x 122 mm |
Special Features | Maximum transformer capacity (up to 1,3 x In) Reduction of unnecessary interruption of operation Precise cut off of overload Characteristic adapted to the transformer Resistant to ageing Selectivity to fuse links gG High current limiting High breaking capacity Easy selection between transformer and fuse link |
Standard | VDE 0636 Part 201 IEC 60269-1 and -2 |
Type | IEC NH Fuse-Links |
Type Of Indicators | Center indicator |
Package Dimensions (L x W x H) | 7.87 in x 2.87 in x 4.8 in |
Package Dimensions (L x W x H) | 200 mm x 73 mm x 122 mm |
Package Weight (Imperial) | 4.850 lb |
Package Weight (Metric) | 2.200 kg |
GPM-SRR90
Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
C331156
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
LCC5
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.
Frequently Asked Questions
What is the primary application for NH fuse-links gTr?
NH fuse-links gTr are specifically designed for the protection of transformers.
What is the operating voltage for these NH fuse-links?
These NH fuse-links operate at a voltage of 400 VAC.
What sizes are available for the NH fuse-links gTr?
The available sizes for these fuse-links are sizes 2, 3, and 4a.
What is the body material of the NH fuse-links?
The body material of these NH fuse-links is ceramic.
What materials are used for the contacts?
The contact materials used are copper, silver-plated.
What is the rated breaking capacity of these fuses?
The rated breaking capacity (I.R. AC) for these fuses is 100 kA.
What is the time/current characteristic of these fuses?
The time/current characteristic for these fuses is gTr, which is adapted to transformers.
How long can these fuses be loaded with 1.3 times nominal current?
The fuses can be loaded with 1.3 times their nominal current for up to 10 hours.
What is the maximum transformer capacity supported by the largest fuse listed?
The largest fuse listed, NH4A2GTR1000KVA, supports a transformer nominal capacity of 1000 kVA.
What is the purpose of the gTr characteristic for transformers?
The gTr characteristic is especially adapted to the transformer's time/current behavior, ensuring optimal selectivity.
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.