Why Choose the Wöhner 33717 QUADRON® 185Power Fuse Switch-Disconnector?
The Wöhner 33717 is a heavy-duty 400 A NH fuse switch-disconnector designed to provide safe switching, reliable isolation and dependable overcurrent protection in industrial low-voltage power distribution systems. Part of the Wöhner QUADRON® 185Power range, this single-pole switchable unit is engineered for applications requiring individual phase isolation while maintaining the performance of an NH fuse system.
Designed for installation on 185 mm busbar systems, the Wöhner 33717 mounts directly onto drilled busbars measuring 30, 40, 60, 80, 100 or 120 × 10 mm. Robust M12 screw terminals provide secure cable connections, while the self-closing inspection holes and lockable cover enhance operational safety and simplify maintenance.
Compatible with NH 2 fuse links in accordance with IEC / HD 60269-2, the 33717 is ideally suited to industrial switchboards, motor control centres, OEM machinery and main distribution panels. Its modular QUADRON® 185Power design enables seamless integration with other Wöhner switching and protection products.
Key Advantages
- Heavy-duty 400 A NH fuse switch-disconnector.
- Single-pole switchable for selective phase isolation.
- Compatible with NH 2 fuse links.
- Designed for the QUADRON® 185Power busbar platform.
- Lockable cover with self-closing inspection holes.
- Secure M12 screw cable terminals.
Key Features
- Wöhner QUADRON® 185Power series.
- 400 A rated current.
- NH 2 fuse size.
- Single-pole switchable design.
- M12 screw terminal connections.
- Suitable for drilled 185 mm busbar systems.
- Connection from top or bottom.
- Front protection rating of IP20.
Safe Switching and Reliable Circuit Protection
The Wöhner 33717 combines safe manual isolation with NH fuse protection, making it suitable for protecting high-current industrial feeders against overloads and short circuits. The single-pole switching design allows individual phases to be isolated for maintenance or testing without affecting the remaining system.
As part of the modular QUADRON® 185Power platform, the device can be installed alongside fuse blocks, MCCB adapters, switch-disconnectors and monitoring accessories on a common 185 mm busbar system, simplifying panel construction while allowing future expansion.
Typical Applications
- Industrial low-voltage switchboards.
- Main and sub-distribution boards.
- Motor control centres.
- Machine building and OEM equipment.
- Manufacturing facilities.
- Commercial and infrastructure power distribution.
