Wöhner 33507 QUADRON Panel Speed three-pole NH fuse switch-disconnector with integrated electronic fuse monitoring, 125 A rating and panel-mounted box terminals.
£495.07
The Wöhner 33507 is a premium three-pole NH fuse switch-disconnector with integrated electronic fuse monitoring, designed for safe switching, circuit isolation and overcurrent protection in industrial low-voltage power distribution systems. As part of the innovative QUADRON® Panel Speed range, it combines reliable switching performance with continuous fuse status monitoring to reduce downtime and improve maintenance efficiency.
Featuring an operator-independent snap-action switching mechanism with double-breaking main contacts, the Wöhner 33507 provides consistent switching performance regardless of operating speed. The integrated electronic fuse monitoring continuously detects blown fuse links without requiring an auxiliary power supply, allowing maintenance engineers to identify faults quickly and restore service faster.
Designed for NH size 000 and NH size 00 fuse links, the Wöhner 33507 has a 125 A rated current and operates on systems up to 690 V AC. Its panel-mounted construction with robust box terminals makes it an ideal solution for industrial switchboards, motor control centres, machine control panels and OEM equipment.
The Wöhner 33507 continuously monitors the condition of installed NH fuse links and immediately signals when a fuse has operated. The monitoring circuit works directly from the system voltage without requiring a separate auxiliary power supply and provides potential-free relay contacts for integration into alarm or control systems.
Combined with the proven spring-controlled switching mechanism and double-breaking contacts, the Wöhner 33507 delivers dependable protection while reducing troubleshooting time and improving the availability of industrial electrical systems.
| Phase | Three Phase |
|---|---|
| Manufacturer | Wöhner |
| Series | QUADRON® Panel Speed |
| Model | 33507 |
| Full part number | 33507000 |
| Type number | QCS-NH00 |
| Product type | NH fuse switch-disconnector with electronic fuse monitoring |
| Fuse sizes | NH 000 and NH 00 |
| Number of poles | 3 |
| Rated current | 125 A |
| Rated operating voltage | 690 V AC |
| Maximum permitted AC voltage | 725 V |
| Rated insulation voltage (Ui) | 690 V AC |
| Rated impulse withstand voltage (Uimp) | 6 kV |
| Conditional short-circuit current | 50 kA with suitable gG fuse links |
| Connection type | Box terminal |
| Mounting type | Panel mounted |
| Electronic fuse monitoring | Integrated, no auxiliary power required |
| Maximum operating temperature | 55°C |
| Weight | approx. 2.08 kg |
| EAN | 4021267335076 |
It is an NH fuse switch-disconnector with integrated electronic fuse monitoring for switching, isolation and overcurrent protection in industrial electrical systems.
No. The integrated electronic fuse monitoring operates directly from the system voltage and does not require an auxiliary power supply.
The Wöhner 33507 accepts NH size 000 and NH size 00 fuse links manufactured in accordance with IEC / HD 60269-2.
Yes. The integrated monitoring provides potential-free auxiliary relay contacts for signalling fuse status to external monitoring or automation systems.
The Wöhner 33507 has a 125 A rated current with a maximum rated operating voltage of 690 V AC.
Wöhner QUADRON® Panel Speed fuse switch-disconnectors are trusted by panel builders and industrial OEMs worldwide for delivering dependable switching, intelligent fuse monitoring and reliable circuit protection.
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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...