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31904 Wohner locking cap D02 version -utility-
Wöhner 31904 D02 locking cap (utility version) for E18 screw fuse systems, rated 400 V AC and 250 V DC, designed to restrict access to D02 fuse links.
£31.22
Why Choose the Wöhner 31904 D02 Locking Cap?
The Wöhner 31904 is a D02 locking cap (utility version) designed for D02 / E18 screw fuse systems. It provides a secure method of preventing unauthorised removal or replacement of D02 fuse links, making it ideal for utility installations, industrial power distribution systems and electrical switchboards where controlled access is required.
Manufactured from durable, halogen-free plastic, the locking cap is suitable for use on 400 V AC and 250 V DC D02 fuse installations. Its robust construction ensures reliable long-term performance while helping maintain the integrity and safety of fuse protection systems.
The Wöhner 31904 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.
Key Advantages
- Designed for D02 / E18 screw fuse systems.
- Utility (EVU) locking version for controlled fuse access.
- Suitable for 400 V AC and 250 V DC systems.
- Manufactured from durable halogen-free plastic.
- Simple installation and removal using the appropriate utility key.
- Ideal for industrial and utility power distribution applications.
Key Features
- Wöhner Part Number: 31904
- Product type: D02 locking cap (utility version)
- Fuse size: D02 / E18
- Rated voltage: 400 V AC
- Rated voltage (DC): 250 V DC
- Utility (EVU) locking design.
- Halogen-free plastic construction.
- Pack of 36.
Secure Protection for D02 Fuse Installations
The Wöhner 31904 locking cap is designed to prevent unauthorised access to D02 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-moulded construction provides a secure fit on compatible D02 fuse holders without affecting the electrical characteristics of the installation, offering dependable long-term protection in demanding environments.
Typical Applications
- Utility (EVU) electrical installations.
- Industrial switchboards.
- Low voltage power distribution systems.
- Commercial electrical panels.
- Infrastructure projects.
- D02 screw fuse installations.
Technical Specifications
| Manufacturer | Wöhner |
|---|---|
| Model | 31904 |
| Product type | Locking cap |
| Version | Utility (EVU) |
| Fuse size | D02 / E18 |
| Rated voltage (AC) | 400 V |
| Rated voltage (DC) | 250 V |
| Material | Plastic |
| Halogen-free | Yes |
| Power dissipation | 0 W |
| Maximum operating temperature | 55°C |
| Standards | IEC 60269-1, IEC 60269-3 |
| Pack quantity | 36 |
| EAN | 4021267319045 |
Frequently Asked Questions
What is the Wöhner 31904 used for?
It is a D02 locking cap that prevents unauthorised removal or replacement of D02 fuse links in compatible fuse holders.
Which fuse size is it designed for?
The locking cap is designed for D02 / E18 screw fuse systems.
What is the rated voltage?
The Wöhner 31904 is rated for 400 V AC and 250 V DC.
What is the utility (EVU) version?
The utility version is intended for installations where access to fuse links should be restricted to authorised personnel using the appropriate locking key.
How many locking caps are supplied?
Each pack contains 36 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.
