Wöhner 31104 D02 plastic screw cap with integrated D01 reducer and inspection hole. Rated at 400 V AC for industrial D-system fuse installations.
£2.32
The Wöhner 31104 is a durable D02 screw cap with integrated reducer for D01 fuse links, designed for use in low voltage industrial electrical distribution systems. Manufactured from high-quality plastic, it provides secure retention, reliable insulation and simplified installation for D-system fuse assemblies. The integrated reducer allows D01 fuse links to be fitted into D02 fuse bases, increasing installation flexibility.
Rated for operation up to 400 V AC and supplied with an E18 thread, the 31104 incorporates an inspection hole that allows quick visual checking of the installed fuse without removing the screw cap. Its robust design helps improve maintenance efficiency while maintaining a high level of electrical safety.
Designed and manufactured to Wöhner's renowned engineering standards, the 31104 complies with IEC 60269 requirements and is widely used by panel builders, OEM manufacturers and electrical contractors in industrial switchboards, distribution boards and machine control panels.
The Wöhner 31104 securely retains D01 fuse links within D02 fuse bases, providing dependable insulation and mechanical protection while allowing installers to standardise fuse installations using a single base size. The integrated inspection hole simplifies routine maintenance by enabling quick visual inspection of installed fuse links.
Its robust insulated construction and precision engineering make it suitable for demanding industrial environments where long service life, safety and ease of maintenance are essential.
| Manufacturer | Wöhner |
|---|---|
| Model | 31104 |
| Product type | D02 screw cap with reducer |
| Fuse compatibility | D01 fuse links in D02 fuse bases |
| Thread size | E18 |
| Rated voltage | 400 V AC |
| Material | Plastic |
| Inspection hole | Yes |
| Weight | Approx. 1.4 kg per 100 units |
| Pack quantity | 20 |
| Standards | IEC 60269-1, IEC 60269-3 |
| Application | D-system fuse installations |
The Wöhner 31104 is a D02 screw cap with an integrated reducer that allows D01 fuse links to be installed in D02 fuse bases.
The Wöhner 31104 is rated for operation up to 400 V AC.
The reducer enables smaller D01 fuse links to be securely fitted into D02 fuse holders.
Yes. The integrated inspection hole allows the installed fuse to be visually checked without removing the cap.
It is commonly used in industrial switchboards, distribution panels and machine control equipment fitted with D-system fuse holders.
Wöhner D fuse accessories are trusted by panel builders, industrial electricians and OEM manufacturers for delivering safe, dependable and long-lasting electrical protection solutions.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...