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31905 Wohner locking cap DII version -utility-
Wöhner 31905 DII utility locking cap for E27 screw fuse systems, rated 500 V AC/DC, designed to restrict access to DII fuse links.
£42.81
Why Choose the Wöhner 31905 DII Locking Cap?
The Wöhner 31905 is a DII locking cap (utility 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 utility installations, industrial power distribution systems and electrical switchboards where controlled access is essential.
Manufactured for use on 500 V AC and 500 V DC DII fuse installations, the locking cap offers a robust solution for protecting fuse carriers while maintaining compliance with IEC standards. As it contains no live electrical parts, it requires no maintenance and delivers dependable long-term performance.
The Wöhner 31905 is supplied as the utility (EVU) version, making it particularly suitable for electricity distribution networks and installations where fuse access must be restricted to authorised personnel using the appropriate locking key. The matching utility key is Wöhner 31907.
Key Advantages
- Designed for DII / E27 screw fuse systems.
- Utility (EVU) locking version for controlled fuse access.
- Suitable for 500 V AC and 500 V DC installations.
- Contains no live electrical components.
- Simple installation and removal using the appropriate utility key.
- Ideal for industrial and utility power distribution applications.
Key Features
- Wöhner Part Number: 31905
- Product type: DII locking cap (utility version)
- Fuse size: DII / E27
- Rated voltage: 500 V AC / 500 V DC
- Utility (EVU) locking design.
- Compatible with Wöhner utility key 31907.
- Passive accessory with no live parts.
- Pack quantity: 20.
Secure Access Control for DII Fuse Installations
The Wöhner 31905 locking cap is designed to prevent unauthorised removal or replacement of DII fuse links while maintaining compliance with IEC fuse system standards. It is widely used in utility infrastructure, industrial facilities and commercial electrical installations where controlled fuse access is essential for operational safety.
Its precision-engineered construction provides a secure fit on compatible DII fuse holders without affecting the electrical characteristics of the installation. The locking cap contains no live parts, making it a reliable and maintenance-free safety accessory for demanding environments.
Typical Applications
- Utility (EVU) electrical installations.
- Industrial switchboards.
- Commercial power distribution systems.
- Electrical infrastructure projects.
- DII / E27 screw fuse installations.
- Controlled-access fuse protection systems.
Technical Specifications
| Manufacturer | Wöhner |
|---|---|
| Model | 31905 |
| Product type | Locking cap |
| Version | Utility (EVU) |
| Fuse size | DII / E27 |
| Rated voltage (AC) | 500 V |
| Rated voltage (DC) | 500 V |
| Power dissipation | 0 W |
| Weight | 1.7 kg/100 pieces |
| Standards | IEC 60269-1, IEC 60269-3 |
| Pack quantity | 20 |
| EAN | 4021267319052 |
| Matching accessory | Wöhner 31907 utility key |
Frequently Asked Questions
What is the Wöhner 31905 used for?
It is a DII utility 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 31905 is rated for 500 V AC and 500 V DC.
Which key is required?
The utility version is designed for use with the Wöhner 31907 utility key.
How many locking caps are supplied?
Each pack contains 20 locking caps.
Trusted by Electrical Professionals Worldwide
Wöhner fuse accessories are trusted by utility providers, panel builders and industrial engineers for delivering secure, standards-compliant and reliable protection across low voltage power distribution systems.
