Wöhner 31349 Mersen Class J time-delay cylindrical fuse link rated at 6 A, 600 V AC and 500 V DC for industrial overcurrent protection.
£31.79
The Wöhner 31349 is a premium Class J time-delay cylindrical fuse link designed to provide dependable overload and short-circuit protection for industrial electrical systems. Manufactured by Mersen for the Wöhner product range, it is specifically engineered for applications where temporary inrush currents are expected, such as motor circuits, transformers and industrial control equipment.
Rated at 6 A, the Wöhner 31349 operates at up to 600 V AC and 500 V DC. Its time-delay operating characteristic helps prevent nuisance fuse operation during equipment start-up while delivering rapid protection against sustained overloads and fault currents. The fuse complies with UL 248-8 and UL 248-1 standards for feeder circuits above 250 V.
Designed in the compact 21 × 57 mm Class J format, the fuse installs into compatible Class J fuse holders and provides exceptional interrupting capacity. Its porcelain, halogen-free construction ensures excellent thermal performance and long service life in demanding industrial environments.
The Wöhner 31349 is engineered to withstand temporary inrush currents while providing dependable protection against overloads and short-circuit faults. It is ideal for protecting industrial control panels, motor circuits, transformers, automation systems and OEM machinery where reliable circuit protection is essential.
When installed in a compatible Class J fuse holder, the fuse helps maximise equipment protection while reducing unnecessary downtime caused by nuisance fuse operation.
| Current | 6 A |
|---|---|
| Manufacturer | Wöhner |
| Fuse manufacturer | Mersen |
| Model | 31349 |
| Alternative SKU | 31349000 |
| Product type | Cylindrical fuse link |
| Fuse class | Class J |
| Frame size | Class J 30 A |
| Operating characteristic | Time delay |
| Rated current | 6 A |
| Rated voltage AC | 600 V |
| Rated voltage DC | 500 V |
| Rated frequency | 50 / 60 Hz |
| AC short-circuit current rating | 200 kA |
| DC short-circuit current rating | 100 kA |
| Dimensions (W × H × D) | 21 × 57 × 21 mm |
| Material | Porcelain |
| Halogen-free | Yes |
| Standards | UL 248-8, UL 248-1 |
| GTIN / EAN | 4021267313494 |
| Pack quantity | 10 |
| Weight | Approx. 50 g per fuse |
The Wöhner 31349 is a Class J time-delay fuse link designed to protect industrial electrical circuits against overloads and short circuits while allowing temporary inrush currents.
The fuse has a rated current of 6 A.
The Wöhner 31349 is rated for applications up to 600 V AC and 500 V DC.
No. It features a time-delay operating characteristic, allowing temporary inrush currents while protecting against sustained overloads.
The Wöhner 31349 is designed for compatible Class J fuse holders accepting 21 × 57 mm cylindrical fuse links.
Wöhner Class J fuse links are trusted by panel builders, OEM manufacturers and industrial electricians for delivering dependable overcurrent protection and reliable performance in demanding industrial 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.
● frequently asked questions
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.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
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.
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.
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.
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
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...