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33703 Wohner in-line fuse switch-disconnector 630 A
Wöhner 33703 QUADRON 185Power NH 3 three-pole fuse switch-disconnector rated at 630 A for industrial 185 mm busbar power distribution systems.
£204.17
Why Choose the Wöhner 33703 QUADRON® 185Power Fuse Switch-Disconnector?
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.
Key Advantages
- Heavy-duty 630 A NH fuse switch-disconnector.
- Designed for the Wöhner QUADRON® 185Power busbar platform.
- Three-pole switching enables safe isolation of all phases.
- Compatible with NH 3 fuse links.
- Self-closing inspection holes simplify routine testing.
- Lockable cover helps prevent unauthorised operation.
Key Features
- Wöhner QUADRON® 185Power series.
- 630 A rated current.
- NH 3 fuse size.
- Three-pole switchable construction.
- M12 screw cable terminals.
- Suitable for 185 mm busbar systems.
- Compatible with drilled busbars.
- Front protection rating of IP20.
Reliable Protection for High-Current Distribution Systems
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.
Typical Applications
- Industrial power distribution systems.
- Main and sub-distribution switchboards.
- Motor control centres.
- Manufacturing and processing facilities.
- OEM machinery and control equipment.
- Commercial and industrial electrical installations.
Technical Specifications
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| Fuse Size | NH3 | |
|---|---|---|
| Device Type | Fuse switch disconnector | |
| Mounting Type | Busbar system 185 mm | |
| Fuse Type | NH (DIN) | |
| Rail / Busbar Profile | 100 × 10 mm, 120 × 10 mm, 30 × 10 mm, 40 × 10 mm, 60 × 10 mm, 80 × 10 mm | |
| Busbar Centre Distance (mm) | 185 mm | |
| Product Series | Wöhner 185Power | |
| Current | 630 A | |
| Phase | Three Phase | |
| Poles | 3-pole | |
| 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 |
Frequently Asked Questions
What is the Wöhner 33703 used for?
The Wöhner 33703 is used for switching, isolating and protecting high-current industrial electrical circuits using NH fuse links.
What fuse size is compatible with the Wöhner 33703?
The device is designed for NH 3 fuse links manufactured in accordance with IEC / HD 60269-2.
What is the rated current?
The Wöhner 33703 has a rated current of 630 A.
Which busbar systems can it be mounted on?
It is designed for the Wöhner 185Power busbar system using busbars measuring 30, 40, 60, 80, 100 or 120 × 10 mm.
Can the cover be locked?
Yes. The cover can be locked in the closed position to improve operational safety and prevent unauthorised access.
Trusted for Industrial Power Distribution
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.
