Wöhner 33637 QUADRON 185Power Speed NH size 1 fuse switch-disconnector with top M12 connection, integrated fuse monitoring, operator-independent snap-action switching and double-breaking contacts.
£867.18
The Wöhner 33637 is a heavy-duty NH in-line fuse switch-disconnector designed for safe switching, dependable circuit isolation and reliable overcurrent protection in industrial low-voltage power distribution systems. As part of the Wöhner QUADRON® 185Power Speed series, this NH size 1 device incorporates integrated fuse monitoring and a top M12 screw connection, making it ideal for industrial switchboards, motor control centres and OEM panel-building applications requiring upper cable entry and rapid fault indication.
The switch-disconnector features an operator-independent snap-action switching mechanism with a double-breaking contact system, ensuring fast, consistent switching regardless of handle operation. Integrated fuse monitoring provides immediate indication of blown fuse links, helping minimise downtime and simplify maintenance.
Designed for installation on 30, 40, 60, 80, 100 and 120 × 10 mm busbars, the Wöhner 33637 forms part of the modular 185Power system. It requires the appropriate mounting accessories and incorporates a lockable, sealable operating cover with touch-safe construction for enhanced operator safety.
The Wöhner 33637 combines dependable switching, safe electrical isolation and high-capacity fuse protection in one industrial assembly. When fitted with suitable NH size 1 fuse links, it protects electrical installations against overloads and short circuits while integrated fuse monitoring enables maintenance personnel to identify faults quickly and efficiently.
Its top-entry M12 connection is ideal where upper cable routing is preferred, while the snap-action mechanism, touch-safe construction and lockable cover make it an excellent solution for industrial switchgear requiring maximum safety, reliability and ease of maintenance.
| Manufacturer | Wöhner |
|---|---|
| Series | QUADRON® 185Power Speed |
| Model | 33637 |
| Full manufacturer SKU | 33637000A |
| Type number | QS185-1 |
| Product type | NH in-line fuse switch-disconnector |
| Fuse size | NH 1 |
| Number of poles | 3 |
| Rated current | 250 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 | 4021267336370 |
| Pack quantity | 1 |
The Wöhner 33637 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 1 fuse links.
Yes. Integrated fuse monitoring provides rapid indication of blown fuse links, helping reduce maintenance time and system downtime.
The Wöhner 33637 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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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...