Mersen M1250E03 IEC non-fusible disconnect switch rated at 1250 A with a three-pole configuration for high-current industrial load switching and electrical isolation.
£3,076.13
The Mersen M1250E03 is a heavy-duty IEC non-fusible disconnect switch engineered to provide dependable load switching and positive electrical isolation in demanding industrial power systems. Rated at 1250 A, this three-pole switch is designed for high-current applications including industrial switchboards, motor control centres and main power distribution systems.
As part of the Mersen IEC disconnect switch range, the M1250E03 delivers robust switching performance without integrated fuse protection, allowing designers to select separate overcurrent protection to suit the application. Its mechanically linked poles provide simultaneous disconnection of all three phases, helping improve operator safety during inspection and maintenance.
The switch is designed for installation inside electrical enclosures and can be combined with compatible Mersen operating handles, shafts, auxiliary contacts, fourth-pole modules and terminal shrouds. Its modular design provides flexibility for OEM machinery, industrial automation and commercial power distribution equipment.
The Mersen M1250E03 provides a dependable means of isolating high-current three-phase electrical circuits during maintenance and servicing. Its mechanically linked switching mechanism disconnects all phases simultaneously, helping establish safe working conditions before equipment is accessed.
Because the switch is supplied as a non-fusible disconnect, designers have the flexibility to specify separate protective devices to match the application. Combined with compatible Mersen operating handles and accessories, it forms part of a versatile industrial switching solution for demanding power systems.
| Current | 1250 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | Mersen |
| Model | M1250E03 |
| Product type | IEC non-fusible disconnect switch |
| Rated operational current | 1250 A |
| Number of poles | 3 |
| Switch configuration | 03 (3-pole) |
| Switch type | Non-fusible load-break switch |
| Operating method | Manual operation with compatible handle |
| Mounting | Base / panel mounting |
| Applicable standard | IEC 60947-3 |
| Compatible direct handle | HD1000 |
| Compatible external handle | HB274 / HB274X with SFB shaft series |
| Compatible fourth pole | 4P1250 |
| Compatible neutral pole | NP1250 |
| Compatible terminal shroud | TS1600-13 |
The M1250E03 is a heavy-duty IEC non-fusible disconnect switch used for manually switching and isolating high-current three-phase electrical circuits.
The switch has a rated operational current of 1250 A.
No. The M1250E03 is a non-fusible disconnect switch. Separate overcurrent protection should be provided as required by the electrical system design.
The switch is compatible with the Mersen HD1000 direct front operating handle and HB274 or HB274X external operating handles used with compatible SFB operating shafts.
Yes. The M1250E03 supports compatible auxiliary contacts, fourth poles, neutral poles, terminal shrouds and external operating accessories from the Mersen disconnect switch range.
Mersen IEC disconnect switches are trusted by panel builders, OEMs and electrical engineers to provide dependable manual load switching and positive electrical isolation for demanding industrial power 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...