Wöhner 33511 QUADRON 60Classic Speed three-pole NH size 1 fuse switch-disconnector with 250 A rating, top M10 screw terminals and CrossLink® busbar mounting.
£746.51
The Wöhner 33511 is a heavy-duty three-pole NH fuse switch-disconnector designed for safe switching, circuit isolation and overcurrent protection in demanding industrial low-voltage power distribution systems. Part of the proven QUADRON® 60Classic Speed range, it is engineered for installations requiring NH size 1 fuse links with a rated current of up to 250 A.
The switch-disconnector incorporates an operator-independent snap-action switching mechanism with double-breaking main contacts, providing fast and reliable switching regardless of handle speed. Safe, tool-free fuse replacement is made possible by the double-breaking contact design, while removal of the cover and fuse carriers provides an additional visible isolation gap for maintenance.
Designed for direct installation onto Wöhner 60Classic busbar systems, the Wöhner 33511 features M10 top screw terminals and CrossLink® adapter technology for quick, secure mounting. It is suitable for use as a main isolator in accordance with IEC/EN 60204-1, making it ideal for industrial switchboards, motor control centres and OEM machinery.
The Wöhner 33511 combines dependable load switching, circuit isolation and overcurrent protection within a compact busbar-mounted assembly. Its spring-controlled switching mechanism ensures repeatable operation during frequent switching duties, while the double-breaking contact system improves operator safety during maintenance and fuse replacement.
CrossLink® adapter technology enables rapid installation onto compatible Wöhner 60Classic busbar systems while maintaining excellent electrical contact. The switch-disconnector can also be used as a mains disconnector in accordance with IEC/EN 60204-1 when installed in accordance with the manufacturer's recommendations.
| Phase | Three Phase |
|---|---|
| Manufacturer | Wöhner |
| Series | QUADRON® 60Classic Speed |
| Model | 33511 |
| Full part number | 33511000 |
| Type number | QCS-NH1 |
| Product type | NH fuse switch-disconnector |
| Fuse size | NH 1 |
| Number of poles | 3 |
| Rated current | 250 A |
| Rated operating voltage | 690 V AC |
| Rated insulation voltage (Ui) | 800 V AC |
| Rated impulse withstand voltage (Uimp) | 8 kV |
| Utilisation category | AC-23B (690 V / 250 A), AC-23A (500 V / 250 A), AC-22A (690 V / 250 A) |
| Conditional short-circuit current | 50 kA with suitable NH fuse links |
| Connection type | M10 screw terminal, top connection |
| Mounting type | Busbar mounted |
| Busbar compatibility | 12, 15, 20, 25, 30 × 5 mm, 10 mm and section busbars |
| Dimensions (W × H × D) | 184 × 314 × 194 mm |
| Weight | approx. 5.89 kg |
| Pack size | 1 |
| EAN | 4021267335113 |
It is an NH size 1 fuse switch-disconnector used for switching, circuit isolation and overcurrent protection in industrial low-voltage power distribution systems.
The Wöhner 33511 is designed for NH size 1 fuse links manufactured in accordance with IEC / HD 60269-2.
The Wöhner 33511 features top M10 screw terminals, whereas the Wöhner 33510 uses bottom M10 screw terminals. Both are rated at 250 A and mount directly onto Wöhner 60Classic busbar systems.
The switch-disconnector has a 250 A rated current with a maximum rated operating voltage of 690 V AC.
Yes. It is suitable for use as a mains disconnector in accordance with IEC/EN 60204-1 when installed and operated according to the manufacturer's guidance.
Wöhner QUADRON® 60Classic Speed fuse switch-disconnectors are trusted by panel builders, OEMs and electrical engineers worldwide for dependable switching, reliable circuit protection and long-term industrial performance.
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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...