Wöhner 33639 QUADRON 185Power Speed NH size 2 fuse switch-disconnector with top M12 connection, integrated fuse monitoring, operator-independent snap-action switching and double-breaking contacts.
£1,152.61
The Wöhner 33639 is a high-performance NH in-line fuse switch-disconnector engineered for safe switching, dependable electrical isolation and reliable overcurrent protection in industrial low-voltage power distribution systems. Part of the Wöhner QUADRON® 185Power Speed series, this NH size 2 device features integrated fuse monitoring together with a top M12 screw connection, making it ideal for industrial switchboards, motor control centres and OEM panel-building applications where top cable entry and rapid fault indication are required.
The switch-disconnector incorporates an operator-independent snap-action switching mechanism with a double-breaking contact system, delivering fast and consistent switching regardless of handle speed. Integrated fuse monitoring enables maintenance personnel to identify blown fuse links quickly, helping minimise downtime and improve operational efficiency.
Designed for installation on 30, 40, 60, 80, 100 and 120 × 10 mm busbars, the Wöhner 33639 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.
The Wöhner 33639 combines dependable switching, safe electrical isolation and high-capacity fuse protection in a robust industrial assembly. Integrated fuse monitoring provides rapid identification of blown fuse links, helping maintenance engineers reduce downtime while maintaining reliable system protection.
Its top-entry M12 connection simplifies installation where upper cable routing is preferred, while the snap-action mechanism, double-breaking contacts and touch-safe construction make it an excellent solution for modern industrial switchgear requiring maximum safety and reliability.
| Manufacturer | Wöhner |
|---|---|
| Series | QUADRON® 185Power Speed |
| Model | 33639 |
| Full manufacturer SKU | 33639000A |
| Type number | QS185-2 |
| Product type | NH in-line fuse switch-disconnector |
| Fuse size | NH 2 |
| Number of poles | 3 |
| Rated current | 400 A |
| Rated operational voltage | Up to 690 V AC |
| Connection position | Top |
| 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 |
| ETIM classification | EC001046 |
| EAN | 4021267336394 |
| Pack quantity | 1 |
The Wöhner 33639 provides safe switching, circuit isolation and overcurrent protection for industrial low-voltage power distribution systems while offering integrated fuse monitoring.
The device is designed for use with standard NH size 2 fuse links.
Yes. Integrated fuse monitoring provides rapid indication of blown fuse links, helping reduce maintenance time and system downtime.
The Wöhner 33639 is compatible with 30, 40, 60, 80, 100 and 120 × 10 mm busbars.
The device incorporates an operator-independent snap-action mechanism with double-breaking contacts for fast, reliable and consistent switching.
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.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...