Safety interlock for three-phase installations
The three-phase locking plug with sign is used to prevent fuses from being inserted during work on electrical installations. By blocking the fuse holder and clearly marking it with the sign "Work in progress - fuse must not be fitted", the safety of those carrying out service or maintenance on three-phase groups and electrically powered machines is increased.
- High security: Prevents accidental reconnection of power when working on three-phase installations.
- Clear labelling: With sign "Work in progress - fuse not to be fitted" for clear visual warning.
- Insulating materials: Made of non-conductive plastic for extra electrical safety.
- Ease of management: Screws quickly into the fuse holder without tools.
- Universal use: Fits threads II+III and III - compatible with most fuse systems.
