Why Choose the Wöhner 33621 NH In-Line Fuse Switch-Disconnector?
The Wöhner 33621 is a premium NH in-line fuse switch-disconnector designed for safe switching, reliable isolation and effective fuse protection in industrial low-voltage power distribution systems. As part of the Wöhner QUADRON® 185Power Speed series, this NH size 00 device is engineered for demanding switchboard, panel-building and busbar applications where dependable performance is essential.
Featuring an operator-independent snap-action switching mechanism, the device delivers consistent switching performance regardless of handle operating speed. Integrated fuse monitoring provides rapid indication of fuse status, helping minimise maintenance time and improve system reliability.
The Wöhner 33621 incorporates a bottom M8 screw connection and is designed for installation on 30, 40, 60, 80, 100 or 120 × 10 mm busbars. Unlike CrossLink-compatible variants, this model is intended for standard screw-connected busbar systems and is not suitable for installations using CrossLink protection modules.
Key Advantages
- Industrial NH size 00 in-line fuse switch-disconnector.
- Integrated fuse monitoring for faster fault identification.
- Operator-independent snap-action switching mechanism.
- Secure bottom M8 screw connection.
- Compatible with a wide range of 185Power busbar sizes.
- Lockable and sealable cover enhances maintenance safety.
Key Features
- Wöhner QUADRON® 185Power Speed series.
- Suitable for NH 000 and NH 00 fuse links.
- Three-pole in-line fuse switch-disconnector.
- Flat-version construction.
- Bottom M8 screw connection.
- Integrated fuse monitoring.
- Operator-independent snap-action switching.
- Suitable for 30 to 120 × 10 mm busbars.
- Cover can be sealed in both ON and OFF positions.
- Can be locked with up to three padlocks when switched OFF.
Reliable Switching and Circuit Protection
NH fuse switch-disconnectors provide both overcurrent protection and dependable circuit isolation within industrial power distribution systems. When fitted with suitable NH fuse links, the Wöhner 33621 helps protect electrical equipment against overloads and short circuits while providing a safe means of disconnecting power during maintenance.
Its operator-independent switching mechanism ensures repeatable switching performance, while integrated fuse monitoring supports faster troubleshooting and reduced downtime. The touch-safe design, lockable cover and robust construction make it ideal for modern industrial switchgear installations.
Typical Applications
- Industrial switchboards.
- 185 mm busbar power distribution systems.
- Main and sub-distribution panels.
- Motor control centres.
- Industrial machinery power supplies.
- Commercial electrical installations.
- Manufacturing facilities.
- Panel-building projects.
