Why Choose the Mersen D219722 DII Screw Gauge Piece?
The Mersen D219722 is a precision-engineered DII screw gauge piece designed for use in Diazed fuse systems. As part of the dependable Mersen D-system ring adapter, fittings and touch protection range, it ensures that only the correct 4 A DII fuse link can be installed in a compatible fuse base.
This gauge insert provides mechanical coding within the fuse base, helping prevent the installation of an incorrectly rated fuse link. By supporting correct fuse selection, the D219722 helps preserve the intended overcurrent protection of electrical circuits in commercial and industrial installations.
With a 4 A current rating, DII fuse size compatibility and a standard brown identification colour, the Mersen D219722 is easy to recognise during installation and maintenance. Its compact, lightweight construction makes it suitable for distribution boards, switchgear and electrical control equipment using D-system fuse protection.
Key Advantages
- Designed for DII Diazed fuse systems.
- 4 A rated gauge insert supports correct fuse selection.
- Brown identification colour enables quick visual recognition.
- Helps prevent installation of incorrectly rated fuse links.
- Supports safe and reliable overcurrent protection.
- Manufactured by Mersen for dependable long-term performance.
Key Features
- Mersen D-system ring adapter and fittings series.
- Catalogue number: 01657.004000.
- 4 A rated current.
- DII fuse size compatibility.
- Brown current identification colour.
- Mechanical coding for compatible D fuse bases.
- RoHS-compliant construction.
- Compact cartridge ring adapter insert design.
Reliable Protection Through Correct Fuse Selection
Screw gauge pieces are important safety components within Diazed fuse systems. They mechanically restrict the size of fuse link that can be installed in the fuse base, helping prevent a higher-rated fuse from being fitted to a circuit that requires lower overcurrent protection.
The Mersen D219722 is specifically coded for 4 A DII fuse links. Its standardised design and brown identification colour make it a practical replacement component for maintaining compatible distribution boards, industrial switchgear and electrical control panels.
Typical Applications
- Electrical distribution boards.
- Industrial switchgear assemblies.
- Commercial electrical installations.
- Machine control panels.
- DII Diazed fuse systems.
- Maintenance and refurbishment of compatible fuse bases.
