Why Choose the Mersen E214019 DIII Locking Cap?
The Mersen E214019 is a robust DIII locking cap designed for compatible D-system fuse bases. Part of the Mersen range of locking devices for D and D0 fuse systems, it helps restrict access to the fuse assembly while supporting safe inspection and maintenance in industrial and commercial electrical installations.
This locking cap features an E33 thread and an integrated testing hole, allowing authorised personnel to carry out electrical checks without removing the complete cap assembly. Its locking design helps prevent unauthorised access or accidental interference with the installed fuse link.
Rated for 63 A and up to 500 V AC or DC, the E214019 is suitable for DIII fuse systems used in distribution boards, switchgear and utility electrical equipment. Its compact construction provides dependable performance while supporting controlled access to critical circuit protection components.
Key Advantages
- Designed for DIII D-system fuse bases.
- 63 A current rating for low-voltage protection assemblies.
- 500 V AC/DC voltage rating for versatile applications.
- Locking design helps prevent unauthorised fuse access.
- Integrated testing hole supports convenient electrical inspection.
- Standard E33 thread for compatible DIII fuse systems.
Key Features
- Mersen D/D0 locking device series.
- Catalogue number: 02072.000000.
- DIII fuse size compatibility.
- 63 A rated current.
- 500 V AC and 500 V DC rated voltage.
- E33 threaded design.
- Integrated testing hole.
- RoHS-compliant construction.
Controlled Access for DIII Fuse Systems
Locking caps are used to restrict access to fuse links installed in compatible D-system fuse bases. This can help prevent unauthorised replacement, removal or interference with important circuit protection components in utility, commercial and industrial electrical equipment.
The Mersen E214019 combines a locking design with a practical testing hole, allowing authorised technicians to perform circuit checks while maintaining controlled access to the fuse assembly. Its DIII format and E33 thread make it suitable for compatible low-voltage distribution systems.
Typical Applications
- Electrical distribution boards.
- Utility and supply authority equipment.
- Industrial switchgear assemblies.
- Commercial electrical installations.
- Machine control panels.
- DIII fuse base maintenance and refurbishment.