Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
31351 Wohner fuse link 8 A, 600 V AC, time delay, Class J
Wöhner 31351 Mersen Class J time-delay cylindrical fuse link rated at 8 A, 600 V AC and 500 V DC, with a 21 × 57 mm format and high interrupting capacity for industrial circuit protection.
£25.43
Why Choose the Wöhner 31351 Class J Fuse Link?
The Wöhner 31351 is a high-quality Class J time-delay cylindrical fuse link designed to provide dependable overload and short-circuit protection in demanding industrial electrical systems. Manufactured by Mersen for the Wöhner product range, it is particularly suitable for circuits that experience temporary inrush currents during the start-up of motors, transformers and other electrical equipment.
Rated at 8 A, the Wöhner 31351 is suitable for operating voltages up to 600 V AC and 500 V DC. Its time-delay characteristic helps prevent nuisance fuse operation during normal short-duration current surges while maintaining effective protection against sustained overloads and damaging fault currents.
The compact 21 × 57 mm Class J format enables installation in compatible 30 A frame Class J fuse holders. Its robust porcelain, halogen-free construction and high interrupting capacity make it a reliable choice for industrial control panels, machinery, switchboards and power distribution equipment.
Key Advantages
- Dependable Class J time-delay circuit protection.
- 8 A rated current for industrial control and power circuits.
- Suitable for applications up to 600 V AC.
- Supports DC circuits up to 500 V DC.
- Withstands temporary start-up and inrush currents.
- High 200 kA AC interrupting capacity.
- Compact 21 × 57 mm cylindrical construction.
Key Features
- Wöhner Class J fuse link.
- Manufactured by Mersen.
- 8 A rated current.
- 600 V AC rated voltage.
- 500 V DC rated voltage.
- Time-delay operating characteristic.
- Class J 30 A frame size.
- 200 kA AC short-circuit current rating.
- 100 kA DC short-circuit current rating.
- Porcelain and halogen-free construction.
Reliable Time-Delay Protection for Industrial Equipment
The Wöhner 31351 is engineered to tolerate brief, non-damaging current surges while responding to sustained overloads and short-circuit conditions. This allows equipment with normal start-up current demands to operate without unnecessary fuse replacement, while still providing dependable protection when a genuine electrical fault occurs.
When installed in an appropriately rated Class J fuse holder, the fuse is suitable for UL feeder circuits above 250 V. Its high interrupting capacity helps safely isolate severe fault currents, supporting reliable operation in industrial control and power distribution systems.
Typical Applications
- Industrial control panels.
- Motor branch circuits.
- Transformer protection.
- Automation and PLC systems.
- OEM machinery and production equipment.
- Industrial switchboards and distribution panels.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 8 A | |
|---|---|---|
| Manufacturer | Wöhner | |
| Fuse manufacturer | Mersen | |
| Model | 31351 | |
| Manufacturer part number | 31351000 | |
| Product type | Cylindrical fuse link | |
| Fuse class | Class J | |
| Frame size | Class J 30 A | |
| Operating characteristic | Time delay | |
| Type number | AJT | |
| Rated current | 8 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 | |
| Approval | UL | |
| UL file | E2137 | |
| GTIN / EAN | 4021267313517 | |
| ECLASS 14.0 | 27142002 | |
| ETIM classification | EC002704 | |
| Pack quantity | 10 | |
| Weight | Approx. 50 g per fuse |
Frequently Asked Questions
What is the Wöhner 31351 used for?
The Wöhner 31351 is a Class J time-delay fuse link used to protect industrial electrical circuits against sustained overloads and short circuits while tolerating temporary inrush currents.
What is the current rating of the Wöhner 31351?
The fuse link has a rated current of 8 A.
What voltage ratings does this fuse support?
The Wöhner 31351 is rated for applications up to 600 V AC and 500 V DC.
Is the Wöhner 31351 a fast-acting fuse?
No. It has a time-delay characteristic, enabling it to withstand brief start-up currents while protecting against sustained overloads and short circuits.
Which fuse holders are compatible with the Wöhner 31351?
It is designed for compatible Class J 30 A frame fuse holders that accept 21 × 57 mm cylindrical fuse links.
Trusted by Electrical Professionals Worldwide
Wöhner Class J fuse links are trusted by panel builders, OEM manufacturers and industrial electrical engineers for delivering reliable overcurrent protection in demanding control and power distribution applications.
