Wöhner 03550 NH size 1 gG fuse link with 20 A current rating and 500 V AC rating for industrial power distribution and circuit protection.
£16.49
The Wöhner 03550 is a high-quality NH size 1 gG fuse link designed to provide dependable overcurrent and short-circuit protection for industrial low-voltage electrical distribution systems. Manufactured by Wöhner, a globally recognised specialist in electrical power distribution technology, this fuse delivers reliable circuit protection for switchgear, control panels and power distribution equipment.
Designed in accordance with IEC 60269 standards, the Wöhner 03550 offers consistent protection against overloads and short circuits while maintaining excellent operational reliability. Its porcelain body, high breaking capacity and dual indicator design make it suitable for demanding industrial environments where safety and uptime are essential.
With a 20 A current rating, 500 V AC operating voltage and gG operating class, this NH fuse is ideal for protecting feeders, motors, transformers, cables and general-purpose industrial circuits requiring dependable fault protection.
NH fuse links are widely used throughout industrial electrical installations to protect cables, motors, transformers and switchgear against overloads and high fault currents. The Wöhner 03550 is engineered to deliver rapid fault interruption, helping minimise equipment damage while maintaining the integrity of electrical distribution systems.
Its robust porcelain construction, excellent interrupting capacity and compliance with international standards make this fuse suitable for demanding industrial environments where dependable protection is essential.
| Current | 20 A |
|---|---|
| Manufacturer | Wöhner |
| Model | 03550 |
| Product type | NH fuse link |
| Fuse size | NH 1 |
| Rated current | 20 A |
| Rated voltage (AC) | 500 V |
| Rated voltage (DC) | 250 V |
| Operating class | gG |
| Short-circuit breaking capacity (AC) | 120 kA |
| Short-circuit breaking capacity (DC) | 80 kA |
| Indicator | Double indicator |
| Material | Porcelain |
| Installation | Vertical or horizontal |
| Halogen free | Yes |
| Standards | IEC 60269-1, IEC 60269-2 |
| HS Code | 85361050 |
| Country of Manufacture | Hungary |
The Wöhner 03550 is an NH size 1 fuse link designed to protect industrial electrical circuits against overloads and short circuits.
This fuse has a 20 A rated current.
The fuse is rated for 500 V AC and 250 V DC applications.
gG fuse links provide full-range protection against both overloads and short circuits, making them suitable for general-purpose industrial circuit protection.
The Wöhner 03550 is commonly installed in switchboards, power distribution systems, motor control centres and industrial electrical panels.
Wöhner NH fuse links are trusted worldwide by panel builders, electrical contractors and industrial engineers for delivering reliable circuit protection, high breaking capacity and long-term operational safety.
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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...