Wöhner 31399 Class CC time-delay cylindrical fuse link rated at 8 A, 600 V AC and 300 V DC with a 200 kA interrupting capacity for industrial control transformer and circuit protection.
£23.50
The Wöhner 31399 is a premium Class CC time-delay cylindrical fuse link designed to provide dependable overcurrent and short-circuit protection for industrial control transformer circuits and other critical electrical applications. Manufactured for the Wöhner system range, this compact fuse is designed in accordance with UL 248-1 and UL 248-4 standards, making it ideal for industrial control panels, switchgear and OEM machinery.
With a rated current of 8 A, a 600 V AC operating voltage and a time-delay characteristic, the Wöhner 31399 withstands temporary transformer and equipment inrush currents while providing reliable protection against sustained overloads and short-circuit faults. It also carries a 300 V DC rating, offering additional application flexibility.
Constructed with a durable porcelain body, the fuse delivers excellent thermal stability, high interrupting capacity and long service life. Its compact Class CC 10 × 38 mm format enables straightforward installation in compatible fuse holders used throughout industrial automation and electrical distribution systems.
The Wöhner 31399 is specifically designed for protecting control transformers and sensitive industrial control circuits. Its time-delay characteristic allows temporary transformer energisation currents to pass without unnecessary fuse operation while maintaining effective protection against sustained overloads and short-circuit conditions.
Its compact dimensions, high interrupting capacity and compliance with recognised UL standards make it an excellent choice for industrial automation systems, control panels and OEM machinery requiring dependable circuit protection.
| Current | 8 A |
|---|---|
| Manufacturer | Wöhner |
| Model | 31399 |
| Type number | ATQR |
| Product type | Class CC cylindrical fuse link |
| Rated current | 8 A |
| Rated voltage AC | 600 V AC |
| Rated voltage DC | 300 V DC |
| Rated frequency | 50 / 60 Hz |
| Fuse size | Class CC, 10 × 38 mm |
| Operating characteristic | Time delay |
| Short-circuit current rating AC | 200 kA |
| Short-circuit current rating DC | 100 kA |
| Primary application | Control transformer protection |
| Standards | UL 248-1, UL 248-4 |
| Approval | UL |
| UL file | E2137 |
| Body material | Porcelain |
| Halogen-free | Yes |
| Dimensions (W × H × D) | 10 × 10 × 38 mm |
| Weight | approx. 8 g |
| Pack quantity | 10 |
| EAN | 4021267313999 |
The Wöhner 31399 is designed to protect industrial control transformers and electrical control circuits against overloads and short-circuit faults.
The Wöhner 31399 has a rated current of 8 A.
The fuse is rated for operation at up to 600 V AC and 300 V DC.
The time-delay design allows temporary transformer and equipment inrush currents without nuisance operation while maintaining reliable protection against sustained overloads and short-circuit faults.
The Wöhner 31399 is a Class CC 10 × 38 mm fuse link and should be installed in a compatible Class CC fuse holder.
Wöhner Class CC fuse links are trusted by panel builders, OEM manufacturers and industrial maintenance engineers for providing dependable circuit protection, high interrupting capacity and long-term operational reliability.
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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...