Mersen M400E03 IEC non-fused three-pole switch disconnector rated at 400 A with 0+3 operating position for industrial low-voltage power distribution and electrical isolation.
£584.76
The Mersen M400E03 is a heavy-duty IEC non-fused switch disconnector designed to provide safe switching and reliable electrical isolation in industrial low-voltage power distribution systems. Rated at 400 A, it is engineered for demanding applications where dependable manual isolation and long-term operational reliability are essential.
Manufactured as part of the proven Mersen IEC disconnect switch range, the M400E03 combines robust construction with smooth switching operation. It is widely used by panel builders, OEMs and industrial electricians for switchboards, motor control centres and distribution panels requiring a high-performance isolation switch.
Featuring a three-pole configuration with a 0+3 operating position, the M400E03 is designed for three-phase electrical systems. Its non-fused design makes it ideal where overcurrent protection is provided separately, allowing the switch to focus on safe load switching and circuit isolation.
Switch disconnectors provide a safe method of manually disconnecting electrical equipment from the power supply before inspection, servicing or maintenance. They establish a clearly defined isolation point while allowing equipment to be safely returned to service once work has been completed.
The Mersen M400E03 is specifically designed for industrial environments requiring dependable manual switching of high-current three-phase circuits. Its robust mechanical construction and proven IEC design make it suitable for continuous operation in demanding electrical installations.
| Current | 400 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | Mersen |
| Series | IEC Disconnect Switches |
| Model | M400E03 |
| Reference number | P1043201 |
| Product type | IEC non-fused switch disconnector |
| Rated current | 400 A |
| Number of poles | 3 |
| Operating position | 0+3 |
| Switch type | Non-fused load break switch |
| Application | Electrical isolation and switching |
| Mounting type | Panel / switchboard installation |
| Suitable systems | Three-phase low-voltage power distribution |
The M400E03 is used to manually switch and safely isolate three-phase electrical circuits in industrial and commercial low-voltage installations.
The Mersen M400E03 has a rated operational current of 400 A.
No. The M400E03 is a non-fused IEC switch disconnector. Circuit protection is provided separately using suitable protective devices.
The switch features a three-pole configuration for three-phase electrical systems.
It is commonly installed within industrial switchboards, distribution panels, motor control centres and OEM electrical assemblies.
Mersen IEC switch disconnectors are trusted by panel builders, OEMs and industrial maintenance engineers for dependable electrical isolation, reliable switching performance and long-term durability in demanding power distribution applications.
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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...