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.
31911 Wohner locking cap DII version -industry-
Wöhner 31911 DII locking cap (industry version) for E27 screw fuse systems, rated 500 V AC/DC, designed to restrict access to DII fuse links.
£33.55
Why Choose the Wöhner 31911 DII Locking Cap?
The Wöhner 31911 is a DII locking cap (industry version) designed for DII / E27 screw fuse systems. It provides a secure method of preventing unauthorised removal or replacement of DII fuse links, making it ideal for industrial switchboards, OEM equipment and commercial power distribution systems where controlled fuse access is required.
Manufactured from durable, halogen-free plastic, the locking cap is suitable for installations operating at 500 V AC and 500 V DC. As it contains no live electrical components, it requires no maintenance while providing reliable long-term protection in demanding industrial environments.
The Wöhner 31911 is supplied as the industry version and is designed for use with the Wöhner 31913 industry locking key. It offers a practical solution for protecting fuse installations against unauthorised access whilst maintaining compliance with IEC fuse standards.
Key Advantages
- Designed for DII / E27 screw fuse systems.
- Industry locking version for controlled fuse access.
- Suitable for 500 V AC and 500 V DC installations.
- Manufactured from durable halogen-free plastic.
- Contains no live electrical components.
- Compatible with the Wöhner 31913 industry locking key.
Key Features
- Wöhner Part Number: 31911
- Product type: DII locking cap (industry version)
- Fuse size: DII / E27
- Rated voltage: 500 V AC / 500 V DC
- Industry locking design.
- Halogen-free plastic construction.
- Compatible with Wöhner 31913 locking key.
- Pack quantity: 20.
Secure Access Control for DII Fuse Installations
The Wöhner 31911 locking cap is engineered to prevent unauthorised removal or replacement of DII fuse links while maintaining compliance with IEC fuse system standards. It is widely used in industrial facilities, commercial buildings and OEM electrical equipment where restricted access to fuse holders improves operational safety.
Its precision-engineered construction provides a secure fit on compatible DII fuse holders without affecting the electrical characteristics of the installation. As the accessory contains no live parts, it delivers reliable, maintenance-free protection throughout its service life.
Typical Applications
- Industrial switchboards.
- Machine control panels.
- Commercial power distribution systems.
- OEM electrical equipment.
- DII / E27 screw fuse installations.
- Controlled-access fuse protection systems.
Technical Specifications
| Manufacturer | Wöhner |
|---|---|
| Model | 31911 |
| Product type | Locking cap |
| Version | Industry |
| Fuse size | DII / E27 |
| Rated voltage (AC) | 500 V |
| Rated voltage (DC) | 500 V |
| Power dissipation | 0 W |
| Material | Halogen-free plastic |
| Weight | 1.7 kg/100 pieces |
| Standards | IEC 60269-1, IEC 60269-3 |
| Pack quantity | 20 |
| EAN | 4021267319113 |
| Matching accessory | Wöhner 31913 industry locking key |
Frequently Asked Questions
What is the Wöhner 31911 used for?
It is a DII industry locking cap that prevents unauthorised removal or replacement of DII fuse links in compatible E27 fuse holders.
Which fuse size is it designed for?
The locking cap is designed for DII / E27 screw fuse systems.
What is the rated voltage?
The Wöhner 31911 is rated for 500 V AC and 500 V DC.
Which key is required?
The industry version is designed for use with the Wöhner 31913 industry locking key.
How many locking caps are supplied?
Each pack contains 20 locking caps.
Trusted by Electrical Professionals Worldwide
Wöhner fuse accessories are trusted by panel builders, OEM manufacturers and industrial engineers for delivering secure, standards-compliant and reliable protection across low-voltage power distribution systems.
