Why Choose the Wöhner 33203 NH Fuse Switch Disconnector?
The Wöhner 33203 is a heavy-duty NH size 2 fuse switch disconnector designed for reliable switching, circuit isolation and fuse protection in industrial low-voltage power distribution systems. Part of the established Wöhner QUADRON® Panel range, it provides a robust panel-mounted solution for switchboards, motor control centres and high-current distribution equipment.
Designed for use with compatible NH 2 fuse links, the Wöhner 33203 combines dependable switching performance with effective protection against overload and short-circuit conditions. Its protective construction helps reduce accidental contact with live components, while the inspection facilities support convenient fuse checks during routine maintenance.
With a rated current of 400 A, a rated operational voltage of up to 690 V AC and robust M10 screw terminals, the Wöhner 33203 is well suited to demanding industrial applications requiring secure high-current conductor connections. Its panel-mounted design supports straightforward integration into professional low-voltage distribution assemblies.
Key Advantages
Heavy-duty NH size 2 fuse switch disconnector.
400 A rated current for high-current power distribution.
Designed for compatible NH 2 fuse links.
M10 screw terminals provide secure conductor connections.
Combines switching, isolation and fuse protection in one device.
Panel-mounted construction supports efficient switchboard assembly.
Key Features
Wöhner QUADRON® Panel series.
NH size 2 fuse switch disconnector.
400 A nominal current rating.
Suitable for NH 2 fuse links.
Rated operational voltage up to 690 V AC.
Robust M10 screw conductor terminals.
Three-pole switching configuration.
Protective cover with inspection facilities.
Reliable High-Current Protection and Isolation
NH fuse switch disconnectors combine manual circuit switching and isolation with the overcurrent protection provided by NH fuse links. The Wöhner 33203 allows high-current electrical circuits to be disconnected for servicing while helping protect cables and downstream equipment against overloads and short circuits.
Its robust panel-mounted construction and M10 screw terminals provide dependable conductor retention in demanding installations. The correct fuse-link rating, conductor size and terminal tightening torque should always be selected in accordance with the applicable Wöhner installation documentation.
Typical Applications
Industrial switchboards and distribution boards.
Motor control centres.
Main power distribution panels.
Machine-building and OEM electrical equipment.
Commercial and industrial electrical installations.
High-current circuit protection and isolation.
Technical Specifications
Current
600 A
Manufacturer
Wöhner
Series
QUADRON® Panel
Model
33203
Product type
NH fuse switch disconnector
Fuse size
NH 2
Rated current
400 A
Rated operational voltage
Up to 690 V AC
Connection type
M10 screw terminals
Number of poles
3
Mounting type
Panel / mounting-plate installation
Fuse-link standard
IEC / HD 60269-2
Switchgear standards
IEC 60947-1 and IEC 60947-3
Manufacturer article number
33203
Application
Industrial low-voltage power distribution
Frequently Asked Questions
What is the Wöhner 33203 used for?
The Wöhner 33203 is used for switching, isolating and protecting high-current low-voltage circuits with compatible NH fuse links.
Which fuse size is compatible with the Wöhner 33203?
The fuse switch disconnector is designed for compatible NH size 2 fuse links.
What is the rated current of the Wöhner 33203?
The Wöhner 33203 has a rated current of 400 A.
What conductor connection does the unit use?
The unit uses robust M10 screw terminals for secure high-current conductor termination.
Where is the Wöhner 33203 normally installed?
It is typically mounted on a plate inside industrial switchboards, main distribution panels and motor control centres.
Trusted by Electrical Professionals Worldwide
Wöhner QUADRON® fuse switch disconnectors are widely used by panel builders and electrical engineers to deliver safe isolation, dependable fuse protection and reliable high-current power distribution.
Current
600 A
Manufacturer
Wöhner
Series
QUADRON® Panel
Model
33203
Product type
NH fuse switch disconnector
Fuse size
NH 2
Rated current
400 A
Rated operational voltage
Up to 690 V AC
Connection type
M10 screw terminals
Number of poles
3
Mounting type
Panel / mounting-plate installation
Fuse-link standard
IEC / HD 60269-2
Switchgear standards
IEC 60947-1 and IEC 60947-3
Manufacturer article number
33203
Application
Industrial low-voltage power distribution
No documents available for this product.
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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...