Why Choose the Wöhner 33502 QUADRON Panel Speed Fuse Switch-Disconnector?
The Wöhner 33502 is a high-performance three-pole NH fuse switch-disconnector engineered for safe switching, isolation and overcurrent protection in industrial low-voltage electrical systems. As part of the advanced Wöhner QUADRON® Panel Speed series, it is designed for panel builders, OEMs and industrial electrical engineers who require dependable switching performance and reliable protection in panel-mounted installations.
The switch-disconnector incorporates an operator-independent snap-action switching mechanism with double-breaking main contacts, ensuring consistent switching regardless of handle speed. Its spring-controlled mechanism allows frequent switching while enabling safe, tool-free fuse replacement and providing a visible isolation gap when the cover and fuse carriers are removed.
Designed for NH size 000 and NH size 00 fuse links, the Wöhner 33502 has a 125 A rated current and operates on systems up to 690 V AC. The compact panel-mounted design, box terminals and multifunction operating handle make it an ideal solution for industrial switchboards, control panels and machinery.
Key Advantages
Industrial NH fuse switch-disconnector for safe switching and isolation.
125 A rated current suitable for industrial power distribution.
Compatible with NH size 000 and NH size 00 fuse links.
Safe, tool-free fuse replacement with double-breaking contacts.
Can be locked in the OFF position using up to three padlocks.
Key Features
Wöhner QUADRON® Panel Speed series.
Three-pole fuse switch-disconnector.
125 A rated current.
690 V AC rated operating voltage.
Compatible with NH 000 and NH 00 fuse links.
Box terminal connection.
FLAG indicator displays switch position.
Compact panel-mounted construction.
Reliable Switching and Circuit Protection
NH fuse switch-disconnectors combine load switching, circuit isolation and fuse protection within a single device. The Wöhner 33502 provides reliable protection against overloads and short circuits while allowing equipment to be safely isolated for maintenance.
Its compact panel-mounted construction, spring-controlled switching mechanism and clearly visible switch position indicator make it particularly suitable for industrial control panels where reliability, safety and ease of maintenance are essential.
Typical Applications
Industrial switchboards.
Machine control panels.
OEM electrical equipment.
Motor control centres.
Power distribution systems.
Industrial automation installations.
Technical Specifications
Phase
Three Phase
Manufacturer
Wöhner
Series
QUADRON® Panel Speed
Model
33502
Full part number
33502000
Type number
QCS-NH00
Product type
NH fuse switch-disconnector
Fuse sizes
NH 000 and 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-23B (690 V / 125 A)
Conditional short-circuit current
50 kA with suitable gG fuse links
Connection type
Box terminal
Mounting type
Panel mounting
Dimensions (W × H)
approx. 106 × 200 mm
Weight
approx. 2.08 kg
EAN
4021267335021
Frequently Asked Questions
What is the Wöhner 33502 used for?
It is used for switching, isolation and overcurrent protection within industrial low-voltage electrical distribution systems.
Which fuse sizes are compatible?
The switch-disconnector accepts NH size 000 and NH size 00 fuse links.
What is the rated current?
The Wöhner 33502 has a 125 A rated current.
Can the switch be locked for maintenance?
Yes. The operating handle can be locked in the OFF position using up to three padlocks.
Where is the Wöhner 33502 typically installed?
It is designed for panel mounting in industrial switchboards, machine control panels and OEM electrical equipment.
Trusted by Electrical Engineers Worldwide
Wöhner QUADRON® Panel Speed fuse switch-disconnectors are trusted worldwide for delivering reliable switching, dependable circuit protection and safe isolation in industrial electrical installations.
Phase
Three Phase
Manufacturer
Wöhner
Series
QUADRON® Panel Speed
Model
33502
Full part number
33502000
Type number
QCS-NH00
Product type
NH fuse switch-disconnector
Fuse sizes
NH 000 and 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-23B (690 V / 125 A)
Conditional short-circuit current
50 kA with suitable gG fuse links
Connection type
Box terminal
Mounting type
Panel mounting
Dimensions (W × H)
approx. 106 × 200 mm
Weight
approx. 2.08 kg
EAN
4021267335021
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
Priority sourcing and supply support
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Customers supported
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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...