Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
33718 Wohner in-line fuse switch-disconnector 630 A
Wöhner 33718 QUADRON 185Power single-pole NH 3 fuse switch-disconnector rated at 630 A for industrial 185 mm busbar systems.
£204.17
Why Choose the Wöhner 33718 QUADRON® 185Power Fuse Switch-Disconnector?
The Wöhner 33718 is a heavy-duty 630 A NH fuse switch-disconnector designed to provide safe switching, dependable isolation and reliable overcurrent protection within industrial low-voltage power distribution systems. Part of the Wöhner QUADRON® 185Power range, this single-pole switchable device is ideal for applications requiring individual phase isolation while maintaining the proven protection of NH fuse technology.
Designed for installation on 185 mm busbar systems, the Wöhner 33718 mounts directly onto drilled busbars measuring 30, 40, 60, 80, 100 or 120 × 10 mm. Durable M12 screw terminals ensure secure cable connections, while the lockable cover and self-closing inspection holes improve operator safety and simplify maintenance. The unit also supports the integration of current transformers for energy monitoring applications.
Compatible with NH 3 fuse links manufactured to IEC / HD 60269-2, the 33718 is suitable for industrial switchboards, motor control centres, OEM machinery and main distribution panels. As part of the modular QUADRON® 185Power platform, it integrates seamlessly with other Wöhner switching and protection devices.
Key Advantages
- Heavy-duty 630 A NH fuse switch-disconnector.
- Single-pole switchable for selective phase isolation.
- Compatible with NH 3 fuse links.
- Designed for the QUADRON® 185Power busbar platform.
- Lockable cover with self-closing inspection holes.
- Supports current transformer integration.
Key Features
- Wöhner QUADRON® 185Power series.
- 630 A rated current.
- NH 3 fuse size.
- Single-pole switchable construction.
- M12 screw terminal connections.
- Suitable for drilled 185 mm busbar systems.
- Current transformer integration supported.
- Front protection rating of IP20.
Safe High-Current Switching and Isolation
The Wöhner 33718 combines manual switching with NH fuse protection, providing reliable isolation and protection against overloads and short circuits. The single-pole switching design enables individual phase isolation, making maintenance and selective circuit control simpler without interrupting the complete installation.
As part of the modular QUADRON® 185Power system, the device can be combined with fuse blocks, MCCB adapters, switch disconnectors and monitoring accessories on the same 185 mm busbar platform, allowing highly flexible and scalable panel designs.
Typical Applications
- Industrial low-voltage switchboards.
- Main power distribution boards.
- Motor control centres.
- Machine building and OEM equipment.
- Energy distribution systems.
- Commercial and industrial electrical installations.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Size | NH3 | |
|---|---|---|
| Device Type | Fuse switch disconnector | |
| Mounting Type | Busbar system 185 mm | |
| Fuse Type | NH (DIN) | |
| Rail / Busbar Profile | 100 × 10 mm, 120 × 10 mm, 30 × 10 mm, 40 × 10 mm, 60 × 10 mm, 80 × 10 mm | |
| Busbar Centre Distance (mm) | 185 mm | |
| Product Series | Wöhner 185Power | |
| Current | 630 A | |
| Phase | Single Phase | |
| Poles | 1-pole | |
| Manufacturer | Wöhner | |
| Series | QUADRON® 185Power | |
| Model | 33718 | |
| Alternative part number | 33718000A | |
| Product type | NH fuse switch-disconnector | |
| Rated current | 630 A | |
| Rated operational voltage | 690 V AC | |
| Rated insulation voltage | 1000 V AC | |
| Rated impulse withstand voltage | 8 kV | |
| Fuse size | NH 3 | |
| Number of poles | 1 (single-pole switchable) | |
| Connection type | M12 screw terminals | |
| Compatible busbars | 30, 40, 60, 80, 100 or 120 × 10 mm | |
| Busbar system | 185Power | |
| Short-circuit strength | Up to 100 kA when protected by fuses | |
| Maximum fuse power dissipation | 48 W | |
| Current transformer integration | Yes | |
| Protection rating | IP20 (front), IP10 when open | |
| Dimensions (W × H × D) | 100 × 670 × 189 mm | |
| Operating temperature | -40°C to +55°C | |
| Connection | M12 screw terminals | |
| Halogen-free | Yes | |
| Approvals | IEC (CB), CCC | |
| Pack quantity | 1 | |
| EAN | 4021267337186 |
Frequently Asked Questions
What is the Wöhner 33718 used for?
The Wöhner 33718 is a single-pole NH fuse switch-disconnector designed for switching, isolation and overcurrent protection in industrial power distribution systems.
Which fuse links are compatible?
The device accepts NH 3 fuse links manufactured in accordance with IEC / HD 60269-2.
What is the rated current?
The Wöhner 33718 has a rated current of 630 A.
Can current transformers be integrated?
Yes. The design supports integration of current transformers for energy measurement and monitoring applications.
Can the cover be locked?
Yes. The cover can be locked in the closed position to help prevent unauthorised operation and improve operator safety.
Trusted by Electrical Professionals Worldwide
Wöhner QUADRON® 185Power fuse switch-disconnectors are trusted by panel builders, OEMs and industrial electrical engineers for dependable high-current protection, safe isolation and modular integration into demanding power distribution systems.
