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MERSEN FUSE MV3 1260A/185mm 3P3 1.500.000 1.500.000
The NH fuse-switch disconnector MULTIVERT® Size 3 delivers reliable high-current protection with a robust 1260A rating, engineered for demanding industrial environments. Its three single-pole configuration ensures secure circuit isolation and straightforward maintenance.
£844.17
Why Choose the Mersen S1023125 MULTIVERT® Double Fuse Switch Disconnector?
The Mersen S1023125 is a high-capacity MULTIVERT® double vertical NH fuse switch disconnector designed for switching, isolation and circuit protection in demanding low-voltage power distribution systems. Rated at 1260 A, the unit combines two 630 A NH Size 3 fuse-switch assemblies within a compact busbar-mounted device.
Designed for direct installation onto 185 mm busbar systems, the S1023125 provides a space-efficient solution for transformer substations, industrial switchboards and cable distribution cabinets. Its 3 × 1-pole switching arrangement allows each phase to be operated individually, supporting flexible maintenance and phase-specific isolation procedures.
The unit accepts NH Size 3 fuse-links manufactured in accordance with IEC/EN 60269-2 and VDE 0636-2. Three M12 screw cable terminals per pole support multiple-conductor installations, while the modular MULTIVERT® construction enables fast assembly and a high degree of protection during installation and servicing.
Key Advantages
- High-capacity 1260 A double fuse switch disconnector.
- Combines two 630 A NH Size 3 fuse circuits in one assembly.
- Designed for direct installation onto 185 mm busbar systems.
- 3 × 1-pole switching supports individual phase operation.
- Three M12 cable terminals per pole accommodate multiple conductors.
- Provides on-load switching, isolation and fuse protection in one device.
Key Features
- Mersen MULTIVERT® 800 A / 1260 A series.
- Double vertical NH fuse switch disconnector.
- 1260 A rated current.
- 500 V AC rated operating voltage.
- Configured as 2 × 3-pole fuse assemblies.
- 3 × 1-pole switching arrangement.
- Compatible with NH Size 3 fuse-links.
- Direct mounting onto 185 mm busbars.
- Three M12 screw connections per pole.
- Suitable for top or bottom cable termination.
- 8 kV rated impulse withstand voltage.
- 1000 V rated insulation voltage.
High-Current Switching and Protection in One Assembly
The Mersen S1023125 combines two 630 A fuse-switch circuits to provide an overall rated current of 1260 A. When fitted with correctly selected NH Size 3 fuse-links, the device provides dependable overload and short-circuit protection while also functioning as an on-load switch and isolation point.
Its individual pole-switching arrangement is particularly useful where phase-by-phase operation is required. The direct 185 mm busbar mounting system reduces cabling and installation complexity, while the three M12 connections per pole provide flexibility for parallel or multiple outgoing conductors.
Typical Applications
- Transformer substations.
- Industrial low-voltage switchboards.
- High-current power distribution systems.
- Residential and industrial distribution units.
- Cable distribution cabinets.
- Manufacturing and process installations.
Technical Specifications
Tick the specs you need, then view products that match.
| Mounting Type | Busbar | |
|---|---|---|
| Current | 400 A | |
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | Fuse switch disconnector | |
| Voltage | 500 V | |
| Item number | S1023125 | |
| Catalogue No | 1.500.000 | |
| Description | NH fuse-switch disconnector MULTIVERT® Size 3 1260A 3x1-Pole switching Screw M12 x3 | |
| EAN/UPC Code | 9008567000847 | |
| Frequency (Hz) | 50 ... 60 Hz | |
| Rated voltage AC IEC | 500 V | |
| Ampere Rating | 1260 A | |
| Switchability | 3x1-pole switching | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Short Circuit Current Rating (SCCR) | 18kA@Ue=AC500V;Ie=2 x 400A/28kA@Ue=AC500V;Ie=2 x 630A | |
| Fuse Size | 3 | |
| Number of Poles | 2 x 3-Pole | |
| Degree of Pollution | 3 | |
| Rated Impulse Withstand Voltage | 8 kV | |
| Rated Insulation Voltage | 1000 V | |
| Max Power dissipation of Fuse Links Pn | 43 W | |
| Installation Mounting | Bus Bar Installation | |
| Product Width | 200 mm | |
| Product Length | 264 mm | |
| Product Height | 824 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 13.3 kg | |
| Sell Pack Width | 210 mm | |
| Sell Pack Length | 755 mm | |
| Sell Pack Height | 202 mm | |
| Product group | IEC Fuse Switch Disconnectors | |
| Conventional Free Air thermal Current With Fuse-Links Ith | 1260 A | |
| Product Weight | 13.3 kg | |
| HS Code | 85365080 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen S1023125 used for?
It is a double vertical NH fuse switch disconnector used for high-current switching, electrical isolation and fused circuit protection in low-voltage power distribution systems.
What is the current rating of the S1023125?
The unit has an overall rated current of 1260 A, provided by two 630 A NH Size 3 fuse circuits.
Which fuse-links are compatible with this device?
The S1023125 is designed for NH Size 3 fuse-links rated up to 630 A per circuit and manufactured in accordance with IEC/EN 60269-2 or VDE 0636-2.
Can each phase be switched independently?
Yes. The device has a 3 × 1-pole switching arrangement, allowing each phase pole to be operated individually.
Which busbar system does the S1023125 fit?
It is designed for direct mounting onto a 185 mm busbar system.
How many cable connections are provided?
The S1023125 provides three M12 screw connections per pole and supports top or bottom cable termination.
Trusted for High-Current Power Distribution
Mersen MULTIVERT® double fuse switch disconnectors are trusted by switchboard manufacturers, distribution network operators and industrial electrical engineers for safe high-current switching, reliable fuse protection and efficient integration into busbar distribution systems.
