Call Us Today
01706 242050
Trade Portal
MERSEN FUSE NH 3C 400A 400V GG NH3GG40V400

MERSEN FUSE NH 3C 400A 400V GG NH3GG40V400

Mersen NH3GG40V400 DIN NH Size 3 gG fuse link rated at 400 A and 400 V AC with live gripping lugs and double indicator for industrial low voltage circuit protection.

SKU: NH3GG40V400Alt SKU: NH3GG40V400MPN: T223738
Price
List Price £40.37 ex VAT
Your Price (ex VAT)
£40.37
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) £40.37
Trade pricing is personalised to your account

Manufacturer Lead Time

£40.37

Why Choose the Mersen NH3GG40V400 NH Fuse Link?

The Mersen NH3GG40V400 is a high-performance DIN NH gG fuse link engineered to provide dependable overload and short circuit protection in low voltage electrical distribution systems. Manufactured by Mersen, this NH Size 3 fuse link is designed for protecting cables, switchgear, transformers, motors and industrial electrical equipment operating in demanding commercial and industrial environments.

Featuring a 400 A rated current and a 400 V AC operating voltage, the NH3GG40V400 delivers full-range gG protection for general-purpose circuit protection. It incorporates live gripping lugs and a double indicator, allowing qualified personnel to safely replace the fuse and quickly identify when it has operated.

With its high breaking capacity, rugged construction and compliance with international standards, this NH fuse link is ideal for industrial switchboards, power distribution equipment and electrical control systems where reliable overcurrent protection is essential.

Key Advantages

  • Reliable DIN NH gG fuse link for industrial circuit protection.
  • 400 A current rating for heavy-duty power distribution systems.
  • 400 V AC rated voltage.
  • General-purpose gG protection against overloads and short circuits.
  • Double indicator provides rapid visual fuse status identification.
  • Live gripping lugs support safer handling during maintenance.
  • Suitable for protecting cables, motors, transformers and switchgear.

Key Features

  • Mersen NH fuse-links gG 400 VAC series.
  • NH Size 3.
  • 400 A rated current.
  • 400 V AC rated voltage.
  • General-purpose gG utilisation category.
  • Double operation indicator.
  • Live gripping lugs.
  • Blade contact design.
  • RoHS compliant.

Reliable Protection for Industrial Power Distribution

The Mersen NH3GG40V400 rapidly interrupts overload and fault currents before they can damage valuable electrical equipment. Its full-range gG operating characteristics make it suitable for protecting distribution circuits, cables and industrial equipment while improving system safety and reducing downtime.

Designed to fit standard NH Size 3 fuse bases and switch disconnectors, this fuse link offers dependable performance in industrial manufacturing, utilities and commercial power distribution installations.

Typical Applications

  • Industrial switchboards.
  • Low voltage power distribution systems.
  • Cable protection.
  • Motor feeder circuits.
  • Transformer protection.
  • Industrial and commercial electrical installations.

Technical Specifications

Current 400 A
Voltage 400 V
Manufacturer Mersen
Series NH Fuse-links gG 400 VAC
Model NH3GG40V400
Item number T223738
Product type DIN NH fuse link
Fuse size NH3
Rated current 400 A
Rated voltage 400 V AC
Utilisation category gG
Breaking capacity 100 kA
Body width Approx. 51.1 mm
Indicator Double indicator
Gripping lugs Live gripping lugs
Contact type Blade contacts
Compliance IEC 60269, DIN NH, RoHS
HS Code 85361090
Country of Manufacture Hungary
Device Type Fuse link
Fuse Type NH (DIN)
Fuse Size NH3
Fuse Class gG

Frequently Asked Questions

What is the Mersen NH3GG40V400 used for?

It protects industrial electrical circuits, cables, motors, transformers and switchgear against overloads and short circuits.

What is the current rating of this fuse?

The NH3GG40V400 has a 400 A rated current.

What voltage is the fuse rated for?

This fuse is designed for use on 400 V AC electrical systems.

What does the gG classification mean?

The gG classification identifies a full-range general-purpose fuse designed to protect cables and electrical equipment against overload and short circuit faults.

Where is the NH3GG40V400 commonly installed?

It is typically installed in industrial switchboards, distribution panels and low voltage power distribution systems.

Trusted for Industrial Circuit Protection

Mersen NH fuse links are trusted by electrical engineers, panel builders and industrial maintenance professionals worldwide for delivering dependable overcurrent protection and reliable long-term performance in demanding electrical installations.

● 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...