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31912 Wohner locking cap DIII version -industry-
Wöhner 31912 DIII locking cap (industry version) for E33 screw fuse systems, rated 500 V AC/DC, designed to restrict access to DIII fuse links.
£42.81
Why Choose the Wöhner 31912 DIII Locking Cap?
The Wöhner 31912 is a DIII locking cap (industry version) designed for DIII / E33 screw fuse systems. It provides a secure method of preventing unauthorised removal or replacement of DIII fuse links, making it ideal for industrial switchboards, OEM machinery and commercial power distribution systems where controlled fuse access is essential.
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 dependable long-term protection in demanding industrial environments.
The Wöhner 31912 is supplied as the industry version and is designed for use with the Wöhner 31913 industry locking key. It provides a simple and effective solution for protecting fuse installations against unauthorised access whilst maintaining compliance with IEC fuse standards.
Key Advantages
- Designed for DIII / E33 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: 31912
- Product type: DIII locking cap (industry version)
- Fuse size: DIII / E33
- Rated voltage: 500 V AC / 500 V DC
- Industry locking design.
- Halogen-free plastic construction.
- Compatible with Wöhner 31913 locking key.
- Pack quantity: 10.
Secure Access Control for DIII Fuse Installations
The Wöhner 31912 locking cap is engineered to prevent unauthorised removal or replacement of DIII fuse links while maintaining compliance with IEC 60269 fuse system standards. It is widely used in industrial facilities, commercial installations and OEM electrical equipment where restricted access to fuse holders improves operational safety.
Its precision-engineered construction provides a secure fit on compatible DIII 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.
- DIII / E33 screw fuse installations.
- Controlled-access fuse protection systems.
Technical Specifications
| Manufacturer | Wöhner |
|---|---|
| Model | 31912 |
| Product type | Locking cap |
| Version | Industry |
| Fuse size | DIII / E33 |
| Rated voltage (AC) | 500 V |
| Rated voltage (DC) | 500 V |
| Power dissipation | 0 W |
| Material | Halogen-free plastic |
| Weight | 2.6 kg/100 pieces |
| Standards | IEC 60269-1, IEC 60269-3 |
| Pack quantity | 10 |
| EAN | 4021267319120 |
| Matching accessory | Wöhner 31913 industry locking key |
Frequently Asked Questions
What is the Wöhner 31912 used for?
It is a DIII industry locking cap that prevents unauthorised removal or replacement of DIII fuse links in compatible E33 fuse holders.
Which fuse size is it designed for?
The locking cap is designed for DIII / E33 screw fuse systems.
What is the rated voltage?
The Wöhner 31912 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 10 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.
