Why Choose the Mersen M63D30S Side-Operated Fused Switch Disconnector?
The Mersen M63D30S is a compact IEC fused switch disconnector designed to provide reliable load switching, safe electrical isolation and fuse-based overcurrent protection for industrial low-voltage power distribution systems. Rated at 63 A, it is ideal for machinery, OEM control panels and commercial electrical installations requiring dependable switching and effective circuit protection.
This model features a right-side-operated mechanism, offering greater flexibility when designing electrical enclosures and switchboards. The side-operated configuration allows the operating handle to be positioned where front-mounted operation would be impractical, making installation easier in compact or complex panel layouts.
Designed for use with NH Size 000 fuse links, the M63D30S combines manual switching, positive circuit isolation and high-performance fuse protection within one compact assembly. Its three-pole configuration is suitable for protecting and isolating three-phase electrical circuits in demanding industrial environments.
Key Advantages
Combines switching, isolation and fuse protection in one compact assembly.
63 A rated current for industrial and OEM applications.
Right-side-operated design for flexible enclosure layouts.
Designed for NH Size 000 fuse links.
Three-pole configuration for three-phase systems.
Robust construction for demanding industrial environments.
Key Features
Mersen IEC fused switch disconnector.
63 A rated operational current.
Three-pole fused switching arrangement.
Right-side-operated mechanism.
Compatible with NH Size 000 fuse links.
Manual load switching and secure electrical isolation.
Fuse-based overload and short-circuit protection.
Suitable for panel and switchboard installation.
Reliable Side-Operated Circuit Protection
Side-operated fused switch disconnectors provide a practical solution where enclosure layouts require the operating mechanism to be positioned away from the front of the switch. This gives panel builders greater flexibility while maintaining safe manual switching and dependable circuit isolation.
The Mersen M63D30S accepts suitable NH Size 000 fuse links, allowing effective overload and short-circuit protection while providing a clearly defined isolation point for servicing and maintenance. Its compact construction makes it particularly suitable for industrial control panels and OEM machinery.
Typical Applications
Industrial machinery control panels.
Motor feeder circuits.
Low-voltage distribution panels.
OEM electrical equipment.
Manufacturing and automation systems.
Commercial and industrial electrical installations.
Technical Specifications
Current
63 A
Manufacturer
Mersen
Model
M63D30S
Reference number
N1043269
Product type
IEC fused switch disconnector
Rated current
63 A
Number of poles
3
Fuse size
NH Size 000
Operating mechanism
Right-side operated
Primary function
Switching, isolation and overcurrent protection
Mounting application
Panel / switchboard installation
Weight
Approx. 1.2 kg
Package quantity
1
Frequently Asked Questions
What is the Mersen M63D30S used for?
The M63D30S is used to switch, isolate and protect three-phase electrical circuits within industrial machinery and low-voltage power distribution systems.
What is the current rating of the M63D30S?
The Mersen M63D30S has a rated operational current of 63 A.
Which fuse size does the M63D30S use?
The switch is designed to accommodate NH Size 000 fuse links, allowing appropriate fuse ratings to be selected for the application.
How is the M63D30S operated?
The M63D30S features a right-side-operated mechanism, making it suitable for switchboards and enclosures requiring side-mounted operation.
How many poles does the M63D30S have?
The switch has a three-pole configuration for simultaneous switching and protection of three-phase electrical circuits.
Trusted by Panel Builders and Electrical Engineers
Mersen fused switch disconnectors are trusted worldwide by panel builders, OEMs and industrial electrical engineers for dependable switching, secure electrical isolation and reliable fuse protection in demanding low-voltage applications.
Current
63 A
Manufacturer
Mersen
Model
M63D30S
Reference number
N1043269
Product type
IEC fused switch disconnector
Rated current
63 A
Number of poles
3
Fuse size
NH Size 000
Operating mechanism
Right-side operated
Primary function
Switching, isolation and overcurrent protection
Mounting application
Panel / switchboard installation
Weight
Approx. 1.2 kg
Package quantity
1
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.
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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...