Call Us Today
01706 242050
Trade Portal
MERSEN FUSE NH3C 100KVA 400V GTR SGL MI NH3GTR100KVA-1

MERSEN FUSE NH3C 100KVA 400V GTR SGL MI NH3GTR100KVA-1

Mersen NH3GTR100KVA-1 DIN NH3 gTr transformer protection fuse link rated at 144 A and 400 V AC for 100 kVA distribution transformers.

SKU: NH3GTR100KVA-1Alt SKU: NH3GTR100KVA-1MPN: V1030533A
Price
List Price £68.27 ex VAT
Your Price (ex VAT)
£68.27
Manufacturer Lead Time Please contact us for a delivery time before you order
Get the best trade prices Trade exclusive

Create a trade account to unlock exclusive pricing, special offers and more.

Sign up for a trade account Quick & easy setup
SUBTOTAL (EX VAT) £68.27
Trade pricing is personalised to your account

Manufacturer Lead Time

£68.27

Why Choose the Mersen NH3GTR100KVA-1 NH Fuse Link?

The Mersen NH3GTR100KVA-1 is a high-quality DIN NH gTr fuse link designed specifically for the protection of low voltage distribution transformers. Manufactured by Mersen, this NH3 fuse link features a transformer-specific operating characteristic that accommodates transformer energisation currents while delivering reliable overload and short circuit protection.

As part of the trusted Mersen NH gTr fuse series, the NH3GTR100KVA-1 incorporates isolated gripping lugs and a centre operating indicator, allowing safer handling and rapid identification of an operated fuse. Its robust ceramic construction and high breaking capacity make it ideal for industrial, commercial and utility power distribution systems.

With a rated current of 144 A, a 400 V AC voltage rating and suitability for 100 kVA transformers, the NH3GTR100KVA-1 delivers dependable transformer protection while helping minimise equipment damage and system downtime.

Key Advantages

  • Designed specifically for distribution transformer protection.
  • 144 A rated current for 100 kVA transformer applications.
  • 400 V AC rated voltage for industrial power systems.
  • Transformer-specific gTr operating characteristic.
  • High current-limiting performance for improved equipment protection.
  • 100 kA breaking capacity for dependable fault interruption.
  • Integrated centre operating indicator.
  • Isolated gripping lugs for safer fuse replacement.

Key Features

  • Mersen NH gTr transformer protection fuse.
  • NH3 fuse size.
  • 144 A rated current.
  • 400 V AC rated voltage.
  • Designed for 100 kVA transformers.
  • Centre operating indicator.
  • Isolated gripping lugs.
  • Ceramic fuse body.
  • High breaking capacity.
  • RoHS compliant.

Reliable Protection for Distribution Transformers

The Mersen NH3GTR100KVA-1 is engineered using a gTr time-current characteristic specifically developed for transformer protection. It tolerates normal transformer magnetising inrush currents while rapidly disconnecting overload and short circuit faults, helping extend transformer life and improve electrical system reliability.

Its current-limiting design reduces thermal and mechanical stress during fault conditions, protecting transformers, switchgear and associated distribution equipment. Installation and replacement should always be carried out by qualified personnel using suitable NH fuse handling tools.

Typical Applications

  • 100 kVA distribution transformer protection.
  • Industrial switchboards.
  • Commercial electrical installations.
  • Utility distribution systems.
  • OEM electrical control panels.
  • Power distribution equipment.

Technical Specifications

Voltage 400 V
Manufacturer Mersen
Series NH gTr Fuse Links
Model NH3GTR100KVA-1
Item number V1030533A
EAN 3605340535709
Product type DIN NH transformer protection fuse link
Fuse characteristic gTr
Fuse size NH3
Rated current 144 A
Rated voltage 400 V AC
Transformer rating 100 kVA
Breaking capacity 100 kA AC
Indicator Centre indicator
Gripping lugs Isolated gripping lugs
Body width 53.1 mm
Weight Approx. 1 kg
Mounting NH fuse base
RoHS compliant Yes
HS Code 85361090
Country of Manufacture Hungary
Device Type Fuse link
Fuse Type NH (DIN)
Fuse Size NH3
Fuse Class gTr
Current 144 A

Frequently Asked Questions

What is the Mersen NH3GTR100KVA-1 used for?

This fuse link is designed to protect low voltage distribution transformers from overloads and short circuit faults.

What transformer size is this fuse designed for?

The NH3GTR100KVA-1 is intended for transformers rated at approximately 100 kVA.

What is the rated current of this fuse?

The fuse has a rated current of 144 A.

What is the purpose of the gTr characteristic?

The gTr characteristic is optimised for transformer protection, allowing normal energisation currents while providing dependable overload and short circuit protection.

What is the benefit of isolated gripping lugs?

Isolated gripping lugs provide safer handling during fuse replacement when used with the correct NH fuse puller by qualified personnel.

Trusted for Transformer Protection

Mersen NH gTr fuse links are trusted worldwide by electrical engineers, switchgear manufacturers and utility providers for reliable transformer protection, high fault interruption capability and dependable performance in industrial power distribution systems.

● Service Agreements

Credit Accounts

Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.

 Priority sourcing and supply support

 Flexible payment terms for qualifying organisations

 Support for engineering, maintenance, and operations

500 +

Stock lines ready to ship

1,000 +

Same day dispatches

3500 +

Customers supported

28 

Trusted Manfacturers

● frequently asked questions

Common questions about our products and support

 

At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.

What product ranges do you supply

We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products. 

Can you help specify the correct part?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

Do you have stock for urgent orders?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What are your delivery times and costs?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What about warranties, returns and faulty items?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

● latest blog

Discover  our latest insights and
expert advice

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

by | Aug 11, 2026 |

LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.

LED Controls: Danfoss Drives Authorised Partner

LED Controls: Danfoss Drives Authorised Partner

by | Jan 17, 2026 |

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...

LED Controls: Your Complete Control Panel Solution

LED Controls: Your Complete Control Panel Solution

by | Jan 17, 2026 |

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...