Wöhner 33703 QUADRON 185Power NH 3 three-pole fuse switch-disconnector rated at 630 A for industrial 185 mm busbar power distribution systems.
£255.21
The Wöhner 33703 is a heavy-duty 630 A NH fuse switch-disconnector designed for reliable switching, isolation and overcurrent protection in demanding industrial low voltage power distribution systems. As part of the Wöhner QUADRON® 185Power range, this size NH 3 device combines robust three-pole switching with dependable fuse protection for high-current applications.
Designed for installation on the 185 mm busbar system, the Wöhner 33703 is compatible with busbars measuring 30, 40, 60, 80, 100 or 120 × 10 mm. Its M12 screw terminals provide secure electrical connections, while the lockable cover and self-closing inspection holes improve safety during operation, inspection and maintenance.
Supporting NH 3 fuse links manufactured to IEC / HD 60269-2, the Wöhner 33703 delivers dependable protection for feeders, switchboards and industrial power distribution equipment. Its compact vertical design makes efficient use of panel space while maintaining excellent accessibility for installation and servicing.
The Wöhner 33703 combines manual switching with NH fuse protection, allowing engineers to safely isolate high-current circuits while protecting downstream equipment against overloads and short circuits. Its robust design makes it suitable for industrial installations where reliability, safety and ease of maintenance are essential.
The QUADRON® 185Power platform supports modular power distribution, enabling fuse switch-disconnectors, circuit breakers and other devices to be combined efficiently on the same busbar system. This helps reduce installation time while providing excellent flexibility for future expansion.
| Current | 630 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | Wöhner |
| Series | QUADRON® 185Power |
| Model | 33703 |
| Alternative part number | 33703000A |
| Product type | NH fuse switch-disconnector |
| Rated current | 630 A |
| Fuse size | NH 3 |
| Number of poles | 3 |
| Connection type | M12 screw terminals |
| Compatible busbars | 30, 40, 60, 80, 100 or 120 × 10 mm |
| Busbar system | 185Power |
| Fuse standard | IEC / HD 60269-2 |
| Maximum permitted fuse power dissipation | 48 W |
| Protection rating | IP20 (front) |
| Standards | IEC 60947-1:2020, IEC 60947-3:2020 |
| Pack quantity | 1 |
| EAN | 4021267337032 |
The Wöhner 33703 is used for switching, isolating and protecting high-current industrial electrical circuits using NH fuse links.
The device is designed for NH 3 fuse links manufactured in accordance with IEC / HD 60269-2.
The Wöhner 33703 has a rated current of 630 A.
It is designed for the Wöhner 185Power busbar system using busbars measuring 30, 40, 60, 80, 100 or 120 × 10 mm.
Yes. The cover can be locked in the closed position to improve operational safety and prevent unauthorised access.
Wöhner QUADRON® 185Power fuse switch-disconnectors are trusted by panel builders and electrical engineers worldwide for reliable circuit protection, safe isolation and efficient high-current power distribution.
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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...