Mersen M630D03 630 A three-pole IEC fused switch disconnector rated up to 690 V AC for industrial load switching, electrical isolation and fuse-based circuit protection.
£1,786.05
The Mersen M630D03 is a heavy-duty IEC fused switch disconnector designed to combine dependable load switching, secure electrical isolation and fuse-based circuit protection within industrial low-voltage power distribution systems. With a rated current of 630 A, it is suitable for high-capacity feeders and electrical installations requiring robust protection against overload and short-circuit faults.
By combining a manually operated disconnector with compatible fuse links, the M630D03 helps simplify switchboard construction while providing a clearly defined isolation point for maintenance. Its durable industrial design makes it suitable for panel builders, OEMs and electrical engineers working with demanding distribution equipment, machinery and infrastructure installations.
The Mersen M630D03 features a three-pole configuration for simultaneous switching and protection of three-phase circuits. It is rated for operating voltages up to 690 V AC and is designed to accept suitable DIN-format fuse links selected according to the electrical characteristics and protection requirements of the installation.
Fused switch disconnectors combine the isolation capabilities of a manually operated switch with the high fault-current protection provided by fuse links. This allows electrical equipment to be disconnected for inspection or maintenance while helping protect cables and downstream components during abnormal operating conditions.
The Mersen M630D03 switches all three phases together, establishing a dependable isolation point for high-current equipment and distribution circuits. Compatible fuse links must be selected according to the load, conductor size, operating voltage and required protection characteristics.
| Current | 630 A |
|---|---|
| Manufacturer | Mersen |
| Model | M630D03 |
| Product type | IEC fused switch disconnector |
| Rated current | 630 A |
| Rated operating voltage | Up to 690 V AC |
| Number of poles | 3 |
| Fuse system | DIN-format fuse links |
| Switch configuration | Three-pole |
| Protection method | Fuse-based overcurrent protection |
| Primary function | Switching, isolation and circuit protection |
| Application | Industrial low-voltage power distribution |
| Mounting application | Panel / switchboard installation |
The M630D03 is used to switch, isolate and provide fuse-based protection for high-current three-phase circuits in industrial low-voltage power distribution systems.
The Mersen M630D03 has a rated operational current of 630 A.
The M630D03 is suitable for low-voltage electrical systems operating at up to 690 V AC.
Yes. The M630D03 is a fused switch disconnector that combines manual circuit isolation with protection provided by compatible fuse links.
The switch has a three-pole configuration for simultaneous switching, isolation and protection of three-phase electrical circuits.
Mersen fused switch disconnectors are trusted by panel builders, OEMs and industrial electrical professionals for dependable high-current switching, secure circuit isolation and effective fuse protection in demanding power distribution applications.
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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...