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MERSEN FUSE SCHRAUBKAPPE MIT PRUFLOCH DIII 00591.000200

MERSEN FUSE SCHRAUBKAPPE MIT PRUFLOCH DIII 00591.000200

Mersen R217641 DIII porcelain screw cap with testing hole for D-system fuse holders, rated 63 A and 500 V AC/DC.

SKU: R217641Alt SKU: 00591.000200MPN: R217641
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Why Choose the Mersen R217641 DIII Screw Cap?

The Mersen R217641 is a high quality DIII porcelain screw cap with testing hole designed for use in DIN D-system fuse installations. Manufactured by Mersen, this screw cap securely retains DIII fuse links within compatible fuse bases while allowing safe voltage testing through the integrated testing hole, making routine inspection and maintenance quicker and more convenient.

Manufactured from durable electrical-grade porcelain, the R217641 provides excellent electrical insulation, heat resistance and mechanical strength for demanding industrial and commercial applications. It is suitable for both AC and DC systems up to 500 V and is rated for 63 A, making it ideal for low-voltage distribution equipment, switchboards and industrial control panels.

Its integrated testing hole enables electrical measurements without removing the screw cap, helping reduce maintenance time while improving safety. Designed for DIII (E33) fuse systems, the Mersen R217641 offers dependable long-term performance for OEMs, panel builders and maintenance engineers.

Key Advantages

  • Genuine Mersen DIII porcelain screw cap.
  • Integrated testing hole for convenient voltage testing.
  • 63 A current rating for DIII fuse systems.
  • Suitable for 500 V AC and DC installations.
  • High-strength porcelain provides excellent insulation and durability.
  • Ideal for industrial, commercial and OEM electrical equipment.

Key Features

  • Mersen D-system fuse accessory.
  • Model: R217641.
  • Catalogue number: 00591.000200.
  • DIII (E33) screw cap.
  • 63 A rated current.
  • 500 V AC / DC rated voltage.
  • Porcelain construction with integrated testing hole.
  • RoHS compliant.
  • Suitable for compatible DIII fuse holders.

Reliable Performance for D-System Fuse Installations

The Mersen R217641 securely retains DIII fuse links while maintaining excellent insulation and mechanical protection. Its robust porcelain body withstands demanding industrial environments and provides dependable operation throughout the service life of the electrical installation.

The integrated testing hole allows maintenance personnel to perform voltage checks without removing the screw cap, helping improve servicing efficiency while maintaining the integrity of the fuse installation.

Typical Applications

  • Industrial switchboards.
  • Commercial electrical distribution panels.
  • Motor control centres.
  • Industrial machinery.
  • OEM electrical equipment.
  • Low-voltage power distribution systems.

Technical Specifications

Manufacturer Mersen
Series D-System Screw Caps
Model R217641
Catalogue number 00591.000200
Product type DIII porcelain screw cap with testing hole
Fuse size DIII
Thread size E33
Rated current 63 A
Rated voltage 500 V AC / 500 V DC
Construction Porcelain
Testing hole Yes
EAN 4086500002368
RoHS compliant Yes
Product weight Approx. 0.0652 kg
HS Code 85363090
Device Type Accessory
Fuse Type D / D0 (Neozed/Diazed)
Fuse Size DIII
Current 63 A
Voltage 500 V

Frequently Asked Questions

What is the Mersen R217641 used for?

It is a DIII porcelain screw cap used to secure D-system fuse links within compatible fuse bases while providing a testing hole for electrical measurements.

What fuse size is compatible?

The R217641 is designed for DIII (E33) fuse systems.

What is the purpose of the testing hole?

The integrated testing hole allows voltage testing without removing the screw cap, simplifying routine maintenance.

What voltage and current is this screw cap rated for?

The R217641 is rated for 63 A and is suitable for 500 V AC and 500 V DC installations.

Where is this product typically installed?

It is commonly installed in industrial switchboards, electrical distribution panels, control equipment and machinery using DIII fuse holders.

Trusted by Electrical Professionals Worldwide

Mersen D-system fuse accessories are trusted by panel builders, electrical contractors and maintenance engineers for delivering dependable protection, safe operation and long-term reliability in demanding electrical installations.

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