Wöhner 33503 QUADRON 60Classic Speed three-pole NH size 00 fuse switch-disconnector with door coupling rotary handle, 125 A rating and snap-action switching mechanism.
£260.08
The Wöhner 33503 is a high-performance NH fuse switch-disconnector designed for safe switching, isolation and overcurrent protection in industrial low-voltage power distribution systems. As part of the advanced Wöhner QUADRON® 60Classic Speed range, it is specifically developed for machine builders, panel manufacturers and OEMs requiring reliable switching combined with external door operation.
Featuring an operator-independent snap-action switching mechanism with double-breaking main contacts, the Wöhner 33503 delivers fast, dependable switching regardless of handle speed. It is designed for use with a door coupling rotary handle, allowing safe operation without opening the electrical enclosure while maintaining high levels of operator protection.
With a rated current of 125 A, support for NH size 00 fuse links and compatibility with 60Classic busbar systems, the Wöhner 33503 is ideal for industrial switchboards, motor control centres and machinery power distribution. Its bottom box-terminal connection simplifies wiring while ensuring secure electrical connections.
NH fuse switch-disconnectors combine switching, isolation and overcurrent protection in a single compact assembly. The Wöhner 33503 enables operators to safely isolate circuits for maintenance while protecting equipment from overloads and short circuits.
Its door-coupling operation allows switching from outside the control panel, improving safety and convenience in industrial environments. The integrated CrossLink® mounting system also reduces installation time while providing reliable long-term electrical performance.
| Phase | Three Phase |
|---|---|
| Manufacturer | Wöhner |
| Series | QUADRON® 60Classic Speed |
| Model | 33503 |
| Full part number | 33503000 |
| Type number | QCS-NH00 |
| Product type | NH fuse switch-disconnector |
| Fuse size | NH 00 |
| Number of poles | 3 |
| Rated current | 125 A |
| Rated operating voltage | 690 V AC |
| Rated insulation voltage | 800 V AC |
| Rated impulse withstand voltage | 8 kV |
| Utilisation category | AC-23A / AC-23B |
| Connection type | Box terminal, bottom connection |
| Mounting type | Busbar mounted |
| Busbar compatibility | 12, 15, 20, 25, 30 × 5 mm, 10 mm and section busbars |
| Dimensions (W × H × D) | approx. 106 × 200 × 128 mm |
| Weight | approx. 2.08 kg |
It is an NH fuse switch-disconnector used for safe switching, circuit isolation and overcurrent protection in industrial electrical systems.
The Wöhner 33503 is designed for NH size 00 fuse links.
Yes. The device is designed for use with a door coupling rotary handle, allowing safe external operation.
The switch-disconnector has a rated current of 125 A.
It mounts directly onto Wöhner 60Classic busbar systems using 12, 15, 20, 25, 30 × 5 mm, 10 mm and section busbars.
Wöhner QUADRON® 60Classic Speed fuse switch-disconnectors are trusted worldwide for delivering dependable switching performance, reliable circuit protection and safe industrial 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...