Wöhner 31324 Mersen Class J fast-acting cylindrical fuse link rated at 15 A, 600 V AC and 300 V DC, with a 21 × 57 mm format and high short-circuit interrupting capacity.
£36.72
The Wöhner 31324 is a high-performance Class J fast-acting cylindrical fuse link designed to provide dependable overcurrent and short-circuit protection in industrial electrical systems. Manufactured by Mersen for the Wöhner product range, it is suitable for control panels, switchboards and machinery requiring reliable protection at voltages up to 600 V AC.
With a rated current of 15 A and a compact 21 × 57 mm Class J format, the Wöhner 31324 delivers rapid interruption of excessive current to help protect sensitive conductors, control equipment and electrical components. Its fast-acting characteristic responds quickly to fault conditions where intentional time delay is not required.
The fuse is rated for both 600 V AC and 300 V DC applications, with a short-circuit current rating of up to 200 kA AC. Its porcelain, halogen-free construction provides robust mechanical and thermal performance for demanding industrial environments.
Fast-acting Class J fuse links interrupt excessive current quickly, helping limit damage to conductors, control components and other electrical equipment during overload or short-circuit conditions. This makes the Wöhner 31324 particularly suitable for circuits that do not experience significant normal operating inrush currents.
Its high interrupting capacity supports installation in demanding industrial systems with substantial prospective fault currents. When installed in a compatible Class J fuse holder, the fuse provides compact and dependable circuit protection for machinery, automation equipment and electrical distribution assemblies.
| Current | 15 A |
|---|---|
| Manufacturer | Wöhner |
| Fuse manufacturer | Mersen |
| Model | 31324 |
| Alternative SKU | 31324000A |
| Product type | Cylindrical fuse link |
| Fuse class | Class J |
| Frame size | Class J 30 A |
| Operating characteristic | Fast acting |
| Rated current | 15 A |
| Rated voltage AC | 600 V |
| Rated voltage DC | 300 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 | 4021267313241 |
| Pack quantity | 10 |
| Weight | Approx. 50 g per fuse |
The Wöhner 31324 is a fast-acting Class J fuse link used to protect industrial electrical circuits and equipment against excessive current and short circuits.
The fuse has a rated current of 15 A.
The Wöhner 31324 is rated for applications up to 600 V AC and 300 V DC.
No. It has a fast-acting characteristic, allowing it to respond rapidly when an overload or short-circuit fault occurs.
It is designed for compatible Class J fuse holders that accept 21 × 57 mm fuse links with a 30 A frame size.
Wöhner Class J fuse links are trusted by panel builders, OEM manufacturers and electrical engineers for delivering rapid, reliable overcurrent protection in demanding industrial 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...