MERSEN FUSE NH 1C 125A 400V GG NH1GG40V125

Q: What is the current rating of this fuse?

The NH1GG40V125 has a 125 A rated current.

Q: What voltage is this fuse designed for?

The fuse is designed for 400 V AC applications.

Mersen NH1GG40V125 DIN NH Size 1 gG fuse-link rated at 125 A and 400 V AC for industrial electrical distribution and circuit protection.

SKU: NH1GG40V125Alt SKU: NH1GG40V125MPN: P223711

List Price £12.47 ex VAT

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£12.47

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Manufacturer Lead Time

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Why Choose the Mersen NH1GG40V125 NH Fuse-Link?

The Mersen NH1GG40V125 is a premium DIN NH gG fuse-link designed to provide reliable full-range protection for low voltage electrical distribution systems, industrial switchgear and motor circuits. Manufactured by Mersen, this NH Size 1 fuse-link protects cables, feeders and electrical equipment against overloads and short circuits, helping maximise system reliability whilst reducing costly downtime.

As part of the trusted Mersen NH gG 400 V fuse-link series, the NH1GG40V125 is manufactured in accordance with IEC standards and features a robust ceramic body, double indication system and live gripping lugs for safe handling by qualified personnel. It is ideal for industrial switchboards, distribution panels, OEM machinery and commercial electrical installations.

With a 125 A rated current, 400 V AC operating voltage and a high breaking capacity, the NH1GG40V125 delivers dependable circuit protection for demanding industrial and commercial applications where safe fault interruption and long service life are essential.

Key Advantages

High-quality DIN NH Size 1 gG fuse-link for full-range circuit protection.
125 A rated current for industrial power distribution.
400 V AC rated operation.
Protects cables, switchgear, motors and electrical distribution equipment.
Double indicator enables rapid identification of an operated fuse.
Live gripping lugs support safe fuse replacement using an NH fuse puller.

Key Features

Mersen NH gG 400 V fuse-link series.
DIN NH Size 1.
125 A rated current.
400 V AC rated voltage.
gG utilisation category for full-range protection.
Double indication system.
Live gripping lugs.
Ceramic body with high breaking capacity.

Reliable Protection for Industrial Power Distribution

NH gG fuse-links provide complete protection against overload and short-circuit faults, helping maintain the safety and reliability of industrial low voltage electrical systems. Their high interrupting capacity protects valuable equipment whilst reducing the risk of damage and unplanned production downtime.

The Mersen NH fuse range is trusted by OEMs, panel builders and maintenance engineers for protecting electrical infrastructure in manufacturing plants, commercial buildings and industrial automation systems.

Typical Applications

Industrial switchboards and distribution panels.
Motor control centres.
Cable and feeder protection.
Industrial machinery and automation systems.
Commercial electrical installations.
Power distribution equipment.

Technical Specifications

Current	125 A
Voltage	400 V
Manufacturer	Mersen
Series	NH gG 400 V Fuse-links
Model	NH1GG40V125
Product type	DIN NH gG fuse-link
Fuse size	NH1
Rated current	125 A
Rated voltage	400 V AC
Utilisation category	gG
Breaking capacity	100 kA AC
Body width	30 mm
Power dissipation	9.8 W
Weight	Approx. 0.28 kg
Package quantity	3
RoHS compliant	Yes
HS Code	85361090
Country of Manufacture	Hungary
Device Type	Fuse link
Fuse Type	NH (DIN)
Fuse Size	NH1
Fuse Class	gG

Frequently Asked Questions

What is the Mersen NH1GG40V125 used for?

This fuse-link provides full-range protection against overloads and short circuits in industrial and commercial low voltage electrical distribution systems.

What is the current rating of this fuse?

The NH1GG40V125 has a 125 A rated current.

What voltage is this fuse designed for?

The fuse is designed for 400 V AC applications.

What does the gG classification mean?

gG fuse-links provide full-range protection against both overload and short-circuit faults, making them suitable for general-purpose circuit protection.

Where is this NH fuse commonly installed?

It is commonly installed in NH fuse bases within switchboards, distribution panels, motor control centres and industrial electrical equipment.

Trusted by Electrical Professionals Worldwide

Mersen NH fuse-links are trusted by panel builders, OEMs and electrical professionals worldwide for delivering dependable protection across industrial and commercial low voltage power distribution systems.

UK delivery

Delivery options

Free UK delivery on orders over £200 ex VAT. Order in-stock items before 2pm Monday to Friday for next-day delivery.

This product Lead time on request

Please contact us for a delivery time before you order

Standard delivery

£8 ex VAT · free over £200

UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.

Heavier items may be charged at a weight-based or pallet rate, shown at checkout.

Collect from our showroom

Mon–Fri, 8am–5pm

Order and pay online, then collect from our showroom.

Please allow 15–30 minutes after ordering for us to prepare your order.

Northern Ireland, ROI & export

Priced at checkout

We deliver to Northern Ireland, the Republic of Ireland and overseas.

Delivery is calculated at checkout based on your destination.

Orders with mixed availability

Shipped complete

If part of your order is on a lead time, we hold it and send everything together.

Need the in-stock items sooner? Ask us and we can split the delivery.

Business customer returns

Returns & order support

Need to return an item? Find the guidance for your order below, then contact our team before sending anything back.

Stocked items

Request within 30 days

Changed your mind or ordered the wrong item? Request a return within 30 days of receipt. There is no restocking charge.

Items must be unused, in resalable condition and in their original packaging, and returns need our approval first. Return carriage is at your cost, and the original delivery charge is not refunded.

Faulty or damaged items

Tell us as soon as possible

Faulty, damaged on delivery or the wrong product supplied? Contact our team as soon as possible with the details.

We will review the issue and arrange an appropriate resolution under our terms and conditions and your statutory rights.

Made-to-order items

Manufacturer approval needed

Manufactured, configured and special-order products can only be returned with the manufacturer’s approval. Any handling charge is agreed with you when you request the return.

This does not affect claims for faulty goods or items that do not meet the agreed specification.

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Let’s get your return sorted.

Send your order number, product details and reason for return. For faults or delivery damage, include photographs if available. We will confirm the next steps.

Email returns team 01706 242050

The 30-day return request period applies to change-of-mind returns for stocked items. It does not limit your statutory rights for faulty or non-conforming goods.

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