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33640 Wohner NH in-line switch-disconnector-fuse size 3
Wöhner 33640 QUADRON 185Power Speed NH size 3 fuse switch-disconnector with bottom M12 connection, integrated fuse monitoring, operator-independent snap-action switching and double-breaking contacts.
£1,168.93
Why Choose the Wöhner 33640 NH In-Line Fuse Switch-Disconnector?
The Wöhner 33640 is a robust NH in-line fuse switch-disconnector designed to provide safe switching, dependable electrical isolation and reliable overcurrent protection in demanding low-voltage power distribution systems. Part of the Wöhner QUADRON® 185Power Speed series, this NH size 3 device features integrated fuse monitoring together with a bottom M12 screw connection, making it ideal for industrial switchboards, motor control centres and OEM panel-building applications.
The switch-disconnector incorporates an operator-independent snap-action switching mechanism with a double-breaking contact system, ensuring fast and consistent switching regardless of handle speed. Integrated fuse monitoring enables rapid identification of blown fuse links, helping reduce downtime and improve maintenance efficiency.
Designed for installation on 30, 40, 60, 80, 100 and 120 × 10 mm busbars, the Wöhner 33640 features a touch-safe design when open, a lockable and sealable operating cover and compatibility with the modular 185Power busbar system for demanding industrial installations.
Key Advantages
- Industrial NH size 3 in-line fuse switch-disconnector.
- Integrated fuse monitoring for rapid fault indication.
- Operator-independent snap-action switching mechanism.
- Double-breaking contacts for enhanced switching safety.
- Bottom M12 screw connection.
- Compatible with Wöhner 185Power busbar systems.
- Lockable and sealable operating cover.
Key Features
- Wöhner QUADRON® 185Power Speed series.
- Suitable for NH size 3 fuse links.
- Three-pole fuse switch-disconnector.
- Integrated fuse monitoring.
- Bottom M12 screw connection.
- Operator-independent snap-action switching.
- Double-breaking contact system.
- Suitable for busbars measuring 30, 40, 60, 80, 100 and 120 × 10 mm.
- Touch-safe construction when open.
- Lockable cover with double-bit lock.
- Can be sealed in both ON and OFF positions.
- Can be locked with up to three padlocks in the OFF position.
Reliable Switching for Industrial Power Distribution
The Wöhner 33640 combines safe switching, dependable electrical isolation and high-capacity fuse protection in a robust industrial assembly. Integrated fuse monitoring allows maintenance engineers to identify blown fuse links quickly, reducing system downtime while maintaining reliable circuit protection.
Its bottom-entry M12 connection, operator-independent switching mechanism, touch-safe construction and lockable operating cover make it an excellent solution for modern industrial switchgear where operational safety, reliability and ease of servicing are essential.
Typical Applications
- Industrial switchboards.
- 185 mm busbar power distribution systems.
- Main and sub-distribution panels.
- Motor control centres.
- Industrial automation equipment.
- Machine building.
- Commercial electrical installations.
- OEM panel-building projects.
Technical Specifications
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| Device Type | Fuse switch disconnector | |
|---|---|---|
| Fuse Size | NH3 | |
| Fuse Type | NH (DIN) | |
| Mounting Type | Busbar system 185 mm | |
| Rail / Busbar Profile | 100 × 10 mm, 120 × 10 mm, 30 × 10 mm, 40 × 10 mm, 60 × 10 mm, 80 × 10 mm | |
| Product Series | Wöhner 185Power | |
| Busbar Centre Distance (mm) | 185 mm | |
| Poles | 3-pole | |
| Manufacturer | Wöhner | |
| Series | QUADRON® 185Power Speed | |
| Model | 33640 | |
| Full manufacturer SKU | 33640000A | |
| Type number | QS185-3 | |
| Product type | NH in-line fuse switch-disconnector | |
| Fuse size | NH 3 | |
| Number of poles | 3 | |
| Rated current | 630 A | |
| Rated operational voltage | Up to 690 V AC | |
| Connection position | Bottom | |
| Connection type | M12 screw connection | |
| Fuse monitoring | Integrated | |
| Switching mechanism | Operator-independent snap-action | |
| Breaking system | Double-breaking | |
| Compatible busbars | 30, 40, 60, 80, 100 and 120 × 10 mm | |
| Mounting | Accessory required for busbar mounting | |
| Standards | IEC 60947-1:2020, IEC 60947-3:2020 (AC ratings) | |
| ETIM classification | EC001046 | |
| EAN | 4021267336400 | |
| Pack quantity | 1 |
Frequently Asked Questions
What is the Wöhner 33640 used for?
The Wöhner 33640 provides safe switching, circuit isolation and overcurrent protection for industrial low-voltage power distribution systems while offering integrated fuse monitoring.
Which fuse size is compatible with this switch-disconnector?
The device is designed for use with standard NH size 3 fuse links.
Does the Wöhner 33640 include fuse monitoring?
Yes. Integrated fuse monitoring provides rapid indication of blown fuse links, helping reduce maintenance time and system downtime.
Which busbar sizes are supported?
The Wöhner 33640 is compatible with 30, 40, 60, 80, 100 and 120 × 10 mm busbars.
What type of switching mechanism does it use?
The device incorporates an operator-independent snap-action mechanism with double-breaking contacts for fast, reliable and consistent switching.
Trusted Industrial Power Distribution Technology
Wöhner QUADRON® fuse switch-disconnectors are trusted worldwide by switchgear manufacturers, panel builders and industrial electrical engineers for dependable switching, reliable circuit protection and safe electrical isolation.
