Mersen DII 20A Blue Fuse Gauge Ring (Passeinsatz) 1657.02

Incorrect fuse replacement can lead to overheating, equipment damage, and serious safety hazards. The Mersen DII 20A Fuse Gauge Ring (Passeinsatz) prevents oversized fuses from being installed in DIAZED fuse bases, ensuring only the correct rated fuse link is used. This screw-in ceramic ring with a brass contact is a simple yet critical component for maintaining circuit protection integrity.

Who is it for

Electricians, panel builders, and maintenance technicians working with DIAZED (D-type) fuse systems in industrial, commercial, and residential installations. It is essential for anyone responsible for electrical safety and compliance with IEC 60269-3-1 and DIN VDE 0636-301 standards.

Main features

• Restricts fuse insertion to the correct current rating (20A) to prevent overfusing
• DII (E27) size for standard DIAZED fuse bases
• Blue colour coding for quick identification of 20A rating
• Robust ceramic body with brass contact for reliable conductivity
• Screw-in installation for secure and permanent placement
• Complies with IEC 60269-3-1 and DIN VDE 0636-301

Specifications

• Product Type: Fuse Gauge Ring (Passeinsatz)
• Fuse System: DIAZED (D-type)
• Fuse Size: DII (E27)
• Rated Current: 20 A
• Colour Code: Blue
• Material: Ceramic body, Brass contact
• Voltage Rating (System): Up to 500V AC / 440V DC
• Installation Type: Screw-in
• Compatibility: DIAZED fuse bases and fuse links DII
• Standard Compliance: IEC 60269-3-1, DIN VDE 0636-301
• Application: Industrial, Commercial, Residential Electrical Installations

Tips

Always verify the fuse gauge ring matches the rated current of the fuse link and base. Replace any damaged or missing gauge rings immediately to maintain overfusing protection.