Mersen M50F03 50 A three-pole fused switch disconnector for FR14 cylindrical fuse links, designed for industrial circuit switching, isolation and overcurrent protection.
£226.71
The Mersen M50F03 is a compact fused switch disconnector designed to provide reliable circuit switching, electrical isolation and fuse-based protection in industrial low-voltage installations. Rated at 50 A, it offers a practical solution for machinery, control panels and power distribution systems requiring safe manual isolation and dependable overcurrent protection.
The M50F03 is designed to accommodate FR14 cylindrical fuse links, combining the switching and protective functions within a single assembly. This arrangement can simplify panel construction while helping protect cables, machinery and downstream electrical equipment against overload and short-circuit currents.
Featuring a three-pole configuration and a 0+3 operating arrangement, the Mersen M50F03 is suitable for three-phase electrical circuits. Its compact industrial design makes it particularly useful for panel builders, OEMs and electrical engineers requiring efficient component installation and a clearly defined isolation point.
Fused switch disconnectors combine a manually operated switching mechanism with replaceable fuse links. This allows a circuit to be safely disconnected for servicing while providing protection against excessive current during normal operation.
The Mersen M50F03 switches all three phases together, helping establish a dependable isolation point for machinery and electrical equipment. Correctly rated FR14 fuse links should be selected according to the load, conductor size and protection requirements of the installation.
| Current | 50 A |
|---|---|
| Manufacturer | Mersen |
| Model | M50F03 |
| Product type | Fused switch disconnector |
| Rated current | 50 A |
| Number of poles | 3 |
| Operating arrangement | 0+3 positions |
| Fuse format | FR14 cylindrical fuse links |
| Switch configuration | Three-pole |
| Protection method | Fuse-based overcurrent protection |
| Primary function | Switching, isolation and circuit protection |
| Application | Industrial low-voltage electrical systems |
| Mounting application | Control panel / switchboard installation |
The M50F03 is used to switch, isolate and provide fuse protection for three-phase electrical circuits in industrial machinery and low-voltage distribution systems.
The Mersen M50F03 has a rated operational current of 50 A.
The M50F03 is designed for compatible FR14 cylindrical fuse links. The fuse rating and characteristics must be selected for the specific circuit.
The switch has a three-pole configuration for simultaneous switching and isolation of three-phase electrical circuits.
Yes. When fitted with correctly selected fuse links, the M50F03 provides fuse-based protection against overload and short-circuit currents.
Mersen fused switch disconnectors are used by panel builders, OEMs and industrial electrical professionals requiring compact switching, secure circuit isolation and dependable fuse protection in 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.
● frequently asked questions
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.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
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.
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.
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.
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
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...