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MERSEN FUSE Switch.fus 125A FR22 0+3 pos. M125F03
Mersen M125F03 IEC fusible disconnect switch rated at 125 A with a three-pole 0+3 configuration for NH Size 2 (FR22) fuse links and industrial load switching.
£272.69
Why Choose the Mersen M125F03 IEC Fusible Disconnect Switch?
The Mersen M125F03 is a robust IEC fusible disconnect switch engineered to provide dependable load switching, electrical isolation and overcurrent protection in industrial power distribution systems. Rated at 125 A, this three-pole switch accepts DIN NH size 2 (FR22) fuse links, making it suitable for demanding three-phase installations requiring coordinated circuit protection.
Designed as part of the Mersen low-voltage disconnect switch range, the M125F03 combines a manually operated load-break switch with fuse protection in a compact assembly. The switch features a 0+3 pole configuration, allowing simultaneous isolation of all three phases while the installed fuse links provide protection against overloads and short circuits.
Suitable for industrial control panels, machinery, OEM equipment and commercial power distribution systems, the M125F03 delivers reliable switching performance together with the flexibility to select fuse ratings appropriate for the protected circuit.
Key Advantages
- Heavy-duty 125 A IEC fusible disconnect switch.
- Designed for compatible DIN NH size 2 (FR22) fuse links.
- Provides load switching, isolation and overcurrent protection.
- Three-pole 0+3 configuration for three-phase systems.
- Compact construction for industrial electrical panels.
- Compatible with selected Mersen operating handles and accessories.
Key Features
- Mersen IEC fusible disconnect switch series.
- 125 A rated current.
- Three mechanically linked poles.
- 0+3 switching configuration.
- Accepts DIN NH size 2 (FR22) fuse links.
- Manual load-break switching operation.
- Designed for panel and enclosure installation.
- Suitable for industrial and commercial applications.
Reliable Load Switching with Integrated Fuse Protection
Fusible disconnect switches combine manual switching with replaceable fuse links, providing both dependable circuit isolation and coordinated overcurrent protection. This arrangement enables operators to safely disconnect electrical equipment while the installed fuses help protect downstream circuits from overloads and fault currents.
The Mersen M125F03 is designed for demanding industrial applications where dependable switching, straightforward maintenance and reliable protection are required. Its compact design makes it suitable for machinery, switchboards and OEM electrical equipment.
Typical Applications
- Industrial switchboards.
- Electrical control panels.
- Motor control centres.
- OEM machinery and automation equipment.
- Commercial and industrial power distribution.
- Manufacturing and processing facilities.
Technical Specifications
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| Mounting Type | Base / panel | |
|---|---|---|
| Current | 125 A | |
| Poles | 3-pole | |
| Device Type | Accessory | |
| Manufacturer | Mersen | |
| Model | M125F03 | |
| Product type | IEC fusible disconnect switch | |
| Rated current | 125 A | |
| Number of poles | 3 | |
| Pole configuration | 0+3 | |
| Fuse system | DIN NH fuse links | |
| Compatible fuse size | NH Size 2 (FR22) | |
| Switching function | Load switching and electrical isolation | |
| Protection | Overcurrent protection via installed fuse links | |
| Mounting | Base / panel mounting | |
| Applicable standard | IEC 60947-3 | |
| Approximate weight | 1.5 kg |
Frequently Asked Questions
What is the Mersen M125F03 used for?
The M125F03 is an IEC fusible disconnect switch used for load switching, electrical isolation and overcurrent protection in industrial three-phase electrical systems.
What is the current rating of the M125F03?
The switch has a rated current of 125 A.
Which fuse links are compatible with the M125F03?
The M125F03 is designed for compatible DIN NH Size 2 (FR22) fuse links. Fuse ratings should be selected according to the electrical application.
What does the 0+3 configuration mean?
The 0+3 configuration indicates a three-pole switching arrangement where all three phases are mechanically operated together for simultaneous isolation.
Where is the M125F03 typically installed?
It is commonly installed within industrial control panels, switchboards, motor control centres and OEM electrical equipment requiring fused load isolation.
Trusted by Electrical Professionals
Mersen IEC fusible disconnect switches are trusted by panel builders, OEMs and electrical engineers to provide dependable switching, coordinated fuse protection and reliable electrical isolation across industrial power distribution systems.
