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MERSEN FUSE MB2 400A 3P 1.001.028 1.001.028
Mersen A1023063 is a MULTIBLOC 2.RST8 size 2 three-pole 400 A NH fuse switch disconnector rated up to 690 V AC and designed as a busbar-mounted main incomer for industrial power distribution.
£520.29
Why Choose the Mersen A1023063 MULTIBLOC 2.RST8 NH Fuse Switch Disconnector?
The Mersen A1023063 is a heavy-duty NH fuse switch disconnector designed for safe switching, isolation and fuse protection in industrial low-voltage power distribution systems. Part of the Mersen MULTIBLOC 2.RST8 series, this size 2 unit combines a rated current of 400 A with triple-pole switching and direct busbar installation.
Designed as a main incomer, the A1023063 provides six M10 terminal screws and accommodates NH size 2 fuse-links. The MULTIBLOC design enables direct installation onto compatible busbar systems and provides IP20 touch protection, helping simplify the construction of industrial distribution boards, feeder pillars and other high-current electrical assemblies.
With a rated operating voltage of up to 690 V AC, a conventional free-air thermal current of 400 A with NH fuse-links and a rated insulation voltage of 1000 V, the A1023063 is engineered for demanding power distribution applications. Its three-pole configuration provides simultaneous switching of all three phases for dependable circuit isolation and maintenance.
Key Advantages
- Heavy-duty 400 A NH fuse switch disconnector for industrial power distribution.
- Three-pole switching for simultaneous control and isolation of three-phase circuits.
- 690 V AC rated operating voltage for demanding low-voltage systems.
- Designed as a main incomer with six M10 terminal screws.
- Direct installation onto compatible 40 mm and 60 mm busbar systems.
- IP20 touch protection supports safer installation and maintenance.
Key Features
- Mersen MULTIBLOC 2.RST8 series.
- Size 2 NH fuse switch disconnector.
- 400 A conventional free-air thermal current with fuse-links.
- Three-pole configuration.
- 690 V AC maximum rated operating voltage.
- 440 V DC rated operating voltage.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- Six M10 terminal screws for the main incomer configuration.
- Suitable for NH size 2 fuse-links in accordance with IEC/EN 60269-2.
- Safe on-load connection and disconnection in accordance with IEC 60947-3.
- IP20 degree of protection.
Reliable Fuse Protection and Circuit Isolation
NH fuse switch disconnectors combine fuse protection with manual switching and circuit isolation in a single assembly. The Mersen A1023063 allows all three phases to be switched together while accommodating NH size 2 fuse-links, providing a practical solution for protecting and isolating high-current feeders in industrial distribution systems.
The MULTIBLOC 2.RST8 range is designed for direct busbar installation, helping reduce wiring requirements and simplify distribution board construction. Its modular design, IP20 touch protection and ability to accommodate standard NH fuse-links make it well suited to panel boards, feeder pillars, meter distribution systems and other professional low-voltage power installations.
Typical Applications
- Industrial low-voltage distribution boards.
- Main incomer circuits.
- Industrial panel boards.
- Feeder pillars and power distribution systems.
- Meter distribution units.
- Measuring transformer cabinets.
- Telecommunications transmitting stations.
- Busbar-mounted three-phase electrical distribution equipment.
Technical Specifications
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| Mounting Type | Busbar | |
|---|---|---|
| Current | 400 A | |
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | Fuse switch disconnector | |
| Fuse Type | NH (DIN) | |
| Manufacturer | Mersen | |
| Series | MULTIBLOC 2.RST8 | |
| Model | A1023063 | |
| Catalogue number | 1.001.028 | |
| Product type | NH fuse switch disconnector | |
| Design | Main incomer | |
| Fuse size | NH size 2 | |
| Number of poles | 3 | |
| Rated current | 400 A | |
| Conventional free-air thermal current with fuse-links | 400 A | |
| Conventional free-air thermal current with solid links | 530 A | |
| Rated operating voltage AC | up to 690 V AC | |
| Rated operating voltage DC | up to 440 V DC | |
| Rated insulation voltage | 1000 V | |
| Rated impulse withstand voltage | 12 kV | |
| Frequency | 50–60 Hz | |
| Terminal connections | 6 × M10 terminal screws | |
| Installation | Direct busbar mounting | |
| Busbar systems | 40 mm and 60 mm | |
| Protection rating | IP20 | |
| Rated short-time withstand current | 13 kA / 1 s | |
| Short-circuit current rating | up to 80 kA | |
| Pollution degree | 3 | |
| Duty | Uninterrupted duty | |
| Standard | IEC/EN 60947-3 | |
| Fuse-link standard | IEC/EN 60269-2 | |
| Weight | approx. 5.74 kg |
Frequently Asked Questions
What is the Mersen A1023063 used for?
The Mersen A1023063 is a three-pole NH fuse switch disconnector used for fuse protection, switching and isolation of high-current circuits in industrial low-voltage power distribution systems.
What is the current rating of the Mersen A1023063?
The A1023063 has a conventional free-air thermal current rating of 400 A with NH fuse-links and is designed for NH size 2 fuse protection.
What voltage is the A1023063 rated for?
The Mersen A1023063 is rated for operating voltages up to 690 V AC and 440 V DC, with a rated insulation voltage of 1000 V.
How many poles does the Mersen A1023063 have?
The A1023063 is a three-pole fuse switch disconnector, allowing simultaneous switching and isolation of all three phases in a three-phase electrical system.
How is the Mersen A1023063 installed?
The MULTIBLOC 2.RST8 is designed for direct installation onto compatible busbar systems. The A1023063 main incomer version incorporates six M10 terminal screws for electrical connections.
Trusted for Industrial Power Distribution
Mersen MULTIBLOC NH fuse switch disconnectors provide industrial panel builders and electrical engineers with integrated fuse protection, safe circuit isolation and convenient busbar installation for demanding low-voltage power distribution systems.
