Wöhner 31325 Mersen Class J fast-acting cylindrical fuse link rated at 20 A and 600 V AC for industrial overcurrent protection.
£36.72
The Wöhner 31325 is a premium Class J fast-acting cylindrical fuse link designed to provide dependable overcurrent and short-circuit protection for industrial electrical installations. Manufactured by Mersen for the Wöhner range, it is suitable for switchboards, control panels and OEM machinery requiring reliable protection at voltages up to 600 V AC.
With a 20 A rated current and a compact 21 × 57 mm Class J format, the Wöhner 31325 delivers rapid fault interruption to help protect cables, control equipment and electrical components from overloads and short circuits. Its fast-acting characteristic makes it particularly suitable for circuits where immediate fault clearance is required.
Designed for use with compatible Class J fuse holders, the Wöhner 31325 offers a high interrupting capacity of up to 200 kA AC. Its porcelain, halogen-free construction ensures dependable thermal and mechanical performance in demanding industrial environments.
The Wöhner 31325 is engineered to disconnect fault currents rapidly, helping minimise damage to electrical conductors and equipment. Its fast-acting characteristic makes it suitable for protecting branch circuits, control systems and industrial machinery where rapid fault clearance is essential.
When installed in a compatible Class J fuse holder, the fuse provides dependable protection for industrial automation systems, electrical distribution equipment and OEM machinery while maintaining compliance with North American electrical standards.
| Current | 20 A |
|---|---|
| Manufacturer | Wöhner |
| Fuse manufacturer | Mersen |
| Model | 31325 |
| Alternative SKU | 31325000A |
| Product type | Cylindrical fuse link |
| Fuse class | Class J |
| Frame size | Class J 30 A |
| Operating characteristic | Fast acting |
| Rated current | 20 A |
| Rated voltage AC | 600 V |
| Rated frequency | 50 / 60 Hz |
| AC short-circuit current rating | 200 kA |
| Dimensions (W × H × D) | 21 × 57 × 21 mm |
| Material | Porcelain |
| Halogen-free | Yes |
| Standards | UL 248-8, UL 248-1 |
| GTIN / EAN | 4021267313258 |
| Pack quantity | 10 |
| Weight | Approx. 50 g per fuse |
The Wöhner 31325 is a fast-acting Class J fuse link designed to protect industrial electrical circuits against overloads and short circuits.
The fuse has a rated current of 20 A.
The Wöhner 31325 is rated for applications up to 600 V AC.
The Wöhner 31325 is a fast-acting Class J fuse, providing rapid protection against fault currents.
It 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 electrical installations.
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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...