Why Choose the Mersen M200D30S Fuse Switch Disconnector?
The Mersen M200D30S is a heavy-duty 200 A three-pole fuse switch disconnector designed to provide reliable switching, electrical isolation and fuse protection within low-voltage power distribution systems. Manufactured by Mersen, this model is engineered for use with NH Size 0 fuse links and is suitable for demanding industrial switchboards, control panels and machinery installations.
Featuring a 3+0 pole configuration and a right-hand side-operated mechanism, the M200D30S is particularly suitable for panel layouts where the operating control must be positioned at the side of the assembly. All three phase conductors are switched simultaneously, providing a clearly defined means of isolating downstream equipment during inspection, servicing or maintenance.
With a rated current of 200 A and suitability for low-voltage systems operating at up to 690 V AC, the M200D30S can be used to protect feeders, machinery supplies and other substantial three-phase loads. When fitted with correctly selected NH fuse links, it helps protect cables and electrical equipment against overload and short-circuit conditions.
Key Advantages
Combines load switching, circuit isolation and fuse protection in one device.
200 A rated current for industrial power distribution applications.
Designed for standard NH Size 0 fuse links.
Three-pole 3+0 configuration for three-phase electrical systems.
Right-hand side operation supports flexible switchboard layouts.
Suitable for circuits operating at up to 690 V AC.
Key Features
Mersen fuse switch disconnector.
200 A nominal current rating.
NH Size 0 fuse-link compatibility.
Three switched poles in a 3+0 arrangement.
Right-hand side-operated switching mechanism.
Load-break switching and electrical isolation capability.
Replaceable fuse links allow protection to be matched to the circuit.
Robust design for industrial panel and switchboard installation.
Reliable Switching and Fuse Protection
Fuse switch disconnectors combine a mechanical switching device with replaceable fuse links, providing an effective solution for circuit control and overcurrent protection. The Mersen M200D30S allows a three-phase circuit to be manually switched and isolated while the installed NH fuse links protect conductors and downstream equipment against excessive current.
The right-hand side-operated mechanism makes this model suitable for customised switchboard and enclosure arrangements. Fuse links should be selected according to the load characteristics, conductor size, prospective fault current and required protection class of the installation.
Typical Applications
Industrial low-voltage switchboards.
Power distribution panels.
Motor control centres.
Machinery and production equipment.
Incoming and outgoing feeder protection.
OEM electrical control assemblies.
Technical Specifications
Current
200 A
Manufacturer
Mersen
Model
M200D30S
Product type
Fuse switch disconnector
Rated current
200 A
Rated operating voltage
Up to 690 V AC, subject to fuse-link and application ratings
Frequency
50 / 60 Hz
Number of poles
3
Pole configuration
3+0
Fuse-link size
NH Size 0
Operating position
Right-hand side operated
Switching function
Load breaking and circuit isolation
Mounting application
Switchboard / panel mounting
Frequently Asked Questions
What is the Mersen M200D30S used for?
The M200D30S is used to switch, isolate and protect three-phase low-voltage circuits in industrial switchboards, distribution panels and machinery installations.
What fuse links are compatible with the M200D30S?
The Mersen M200D30S is designed for NH Size 0 fuse links. The fuse current rating and operating class must be selected to suit the protected circuit.
What is the current rating of the M200D30S?
The Mersen M200D30S has a nominal current rating of 200 A.
How is the M200D30S operated?
This model features a right-hand side-operated mechanism, making it suitable for switchboards and panels requiring side access to the operating control.
Are fuse links included with the M200D30S?
Fuse links are generally selected separately so their current rating, breaking capacity and protection characteristics can be matched to the application.
Trusted by Panel Builders and Electrical Engineers
Mersen fuse switch disconnectors are widely used by panel builders, electrical contractors and industrial engineers for dependable load switching, safe circuit isolation and effective protection in demanding low-voltage distribution systems.
Current
200 A
Manufacturer
Mersen
Model
M200D30S
Product type
Fuse switch disconnector
Rated current
200 A
Rated operating voltage
Up to 690 V AC, subject to fuse-link and application ratings
Frequency
50 / 60 Hz
Number of poles
3
Pole configuration
3+0
Fuse-link size
NH Size 0
Operating position
Right-hand side operated
Switching function
Load breaking and circuit isolation
Mounting application
Switchboard / panel mounting
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
Flexible payment terms for qualifying organisations
Support for engineering, maintenance, and operations
500 +
Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
28
Trusted Manfacturers
● frequently asked questions
Common questions about our products and support
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
What product ranges do you supply
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Can you help specify the correct part?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Do you have stock for urgent orders?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
What are your delivery times and costs?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
What about warranties, returns and faulty items?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
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...