SKU: M50F30SMPN: M50F30S
MERSEN FUSE Switch.fus 50A FR14 R side op. M50F30S

MERSEN FUSE Switch.fus 50A FR14 R side op. M50F30S

Mersen M50F30S 50 A three-pole IEC fused switch disconnector with right-side operation for FR14 cylindrical fuse links, providing switching, isolation and overcurrent protection.

Price
List Price ex VAT
Your Price
On backorder Please contact us for a delivery time before you order
Get the best trade prices Trade exclusive

Create a trade account to unlock exclusive pricing, special offers and more.

Trade pricing is personalised to your account

Available on backorder

£254.67

Why Choose the Mersen M50F30S Side-Operated Fused Switch Disconnector?

The Mersen M50F30S is a compact IEC fused switch disconnector designed to provide dependable switching, electrical isolation and fuse-based overcurrent protection for industrial low-voltage electrical systems. Rated at 50 A, it is ideal for machinery, OEM control panels and power distribution applications requiring reliable operation and safe maintenance isolation.

Featuring a right-side-operated mechanism, the M50F30S offers increased flexibility when designing switchboards and electrical enclosures. The side-operated arrangement is particularly useful where front-mounted operating mechanisms are impractical due to enclosure layout or internal component positioning.

Designed for use with FR14 cylindrical fuse links, the M50F30S combines manual load switching, secure circuit isolation and fuse protection within a single compact assembly. Its three-pole configuration makes it suitable for switching and protecting three-phase electrical circuits in demanding industrial environments.

Key Advantages

  • Combines switching, isolation and fuse protection in one compact assembly.
  • 50 A rated current for industrial and OEM applications.
  • Right-side-operated design for flexible enclosure layouts.
  • Designed for FR14 cylindrical fuse links.
  • Three-pole configuration for three-phase systems.
  • Robust construction for demanding industrial environments.

Key Features

  • Mersen IEC fused switch disconnector.
  • 50 A rated operational current.
  • Three-pole fused switching arrangement.
  • Right-side-operated mechanism.
  • Compatible with FR14 cylindrical 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 design or equipment layout requires the operating handle to be positioned on the side of the switch assembly. This allows greater flexibility during panel construction while maintaining straightforward operation and safe circuit isolation.

The Mersen M50F30S accommodates suitable FR14 fuse links, enabling reliable protection against overload and short-circuit faults while providing a clearly defined isolation point for servicing and maintenance. Its compact design makes it particularly suitable for modern industrial control panels and machinery.

Typical Applications

  • Industrial machinery control panels.
  • Motor feeder circuits.
  • OEM electrical equipment.
  • Low-voltage distribution panels.
  • Manufacturing and automation systems.
  • Commercial and industrial electrical installations.

Technical Specifications

Current 50 A
Manufacturer Mersen
Model M50F30S
Reference number L1043267
Product type IEC fused switch disconnector
Rated current 50 A
Number of poles 3
Fuse format FR14 cylindrical fuse links
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 M50F30S used for?

The M50F30S 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 M50F30S?

The Mersen M50F30S has a rated operational current of 50 A.

Which fuse type does the M50F30S use?

The switch is designed to accommodate FR14 cylindrical fuse links, allowing appropriate fuse ratings to be selected for the application.

How is the M50F30S operated?

The M50F30S features a right-side-operated mechanism, making it suitable for switchboards and enclosures requiring side-mounted operation.

How many poles does the M50F30S 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.

● Service Agreements

Credit Accounts

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.

 Tick  Priority sourcing and supply support

 Tick  Flexible payment terms for qualifying organisations

 Tick  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.

● latest blog

Discover  our latest insights and
expert advice

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

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.

LED Controls: Danfoss Drives Authorised Partner

LED Controls: Danfoss Drives Authorised Partner

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...

LED Controls: Your Complete Control Panel Solution

LED Controls: Your Complete Control Panel Solution

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...