The Wöhner 03181 is a heavy-duty NH fuse link designed to provide reliable full-range protection against overloads and short circuits in demanding industrial power distribution systems. Manufactured by Wöhner, this NH 4a size gG fuse is rated at 800 A with a 500 V AC and 250 V DC voltage rating, making it ideal for high-current switchgear and distribution applications.
Designed in accordance with IEC 60269, the Wöhner 03181 delivers dependable protection for cables, conductors and electrical equipment. Its NH 4a construction allows installation into compatible NH fuse bases and switch disconnectors while providing a high breaking capacity of 120 kA for enhanced system safety.
Manufactured using a robust porcelain body and halogen-free materials, the 03181 offers long service life and reliable performance in industrial, commercial and utility power distribution systems.
Suitable for industrial low voltage power distribution.
High-Performance Circuit Protection
The Wöhner 03181 is engineered to provide dependable overload and short-circuit protection for high-current electrical systems. Its NH 4a design and gG operating class deliver full-range cable and equipment protection, making it suitable for demanding industrial power distribution applications.
Designed for installation in compatible NH fuse-switch disconnectors and fuse bases, the 03181 helps maintain system reliability while providing excellent fault interruption performance.
Typical Applications
Industrial switchgear.
Main power distribution panels.
Motor control centres.
Utility power distribution.
OEM electrical equipment.
Commercial and industrial installations.
Technical Specifications
Current
800 A
Manufacturer
Wöhner
Model
03181
Product type
NH Fuse Link
Fuse size
NH 4a
Rated current
800 A
Rated voltage AC
500 V
Rated voltage DC
250 V
Utilisation category
gL/gG
Breaking capacity
120 kA
Power loss at rated current
67 W
Material
Porcelain
Halogen free
Yes
Pack quantity
1
EAN
4021267031817
HS Code
85361090
Country of Manufacture
Hungary
Frequently Asked Questions
What is the Wöhner 03181 used for?
It provides overload and short-circuit protection for high-current industrial power distribution systems.
What is the current rating?
The Wöhner 03181 has a rated current of 800 A.
What fuse size is it?
This model is an NH 4a fuse link.
What utilisation category does it have?
The fuse is classified as gL/gG, providing full-range protection against overloads and short circuits.
Where is the Wöhner 03181 typically installed?
It is commonly installed in industrial switchgear, main distribution panels, utility installations and OEM power distribution equipment.
Trusted by Electrical Professionals Worldwide
Wöhner NH fuse links are trusted by switchgear manufacturers, panel builders and industrial electricians for delivering dependable circuit protection, high fault-breaking capacity and long-term reliability in demanding power distribution applications.
Current
800 A
Manufacturer
Wöhner
Model
03181
Product type
NH Fuse Link
Fuse size
NH 4a
Rated current
800 A
Rated voltage AC
500 V
Rated voltage DC
250 V
Utilisation category
gL/gG
Breaking capacity
120 kA
Power loss at rated current
67 W
Material
Porcelain
Halogen free
Yes
Pack quantity
1
EAN
4021267031817
HS Code
85361090
Country of Manufacture
Hungary
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
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.
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We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
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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.
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...
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...