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.
