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MERSEN FUSE MV3 630A/185mm 3P3 1.370.076 1.370.076
Engineered for high-reliability switching and protection in demanding industrial environments, this MULTIVERT® unit features a robust 3-pole design rated at 630A, perfectly suited for bus bar systems with 185mm spacing.
£580.65
Why Choose the Mersen M1023258 MULTIVERT Fuse-Switch Disconnector?
The Mersen M1023258 is a robust NH vertical fuse-switch disconnector designed to provide reliable switching, circuit isolation and fuse protection in demanding low-voltage electrical distribution systems. Part of the Mersen MULTIVERT® 630A series, it is engineered for industrial switchboards, transformer substations and power distribution cabinets requiring dependable three-phase protection.
This model incorporates three calibrated current transformers for accurate three-phase current measurement. Each transformer is rated at 600/5 A, 5 VA, Class 0.5, allowing electrical current to be monitored without installing separate external measuring transformers. Its modular construction supports efficient installation and maintenance within modern power distribution systems.
With a conventional free-air thermal current rating of 630 A, compatibility with NH size 3 fuse-links and installation onto a 185 mm busbar system, the M1023258 is suitable for high-current industrial feeders. The three-pole switching mechanism disconnects all phases together, while the V-terminal arrangement provides secure and practical cable termination.
Key Advantages
- Combines switching, isolation and fuse protection in one unit.
- 630 A thermal current rating for high-current distribution circuits.
- Integrated 600/5 A Class 0.5 current transformers for three-phase measurement.
- Designed for electrical systems operating at up to 690 V AC.
- Direct installation onto standard 185 mm busbar systems.
- Three-pole simultaneous switching supports effective circuit isolation.
- Compatible with standard NH size 3 fuse-links.
- V-terminal connections provide secure conductor termination.
Key Features
- Mersen MULTIVERT® 630A series.
- NH size 3 vertical fuse-switch disconnector.
- 630 A conventional free-air thermal current with fuse-links.
- Suitable for operating voltages up to 690 V AC.
- 1 × 3-pole switching arrangement.
- Three integrated 600/5 A, 5 VA, Class 0.5 calibrated current transformers.
- Current measurement across all three poles.
- Direct mounting onto a 185 mm busbar system.
- V-terminal cable connection.
- Touch-protected construction suitable for industrial distribution assemblies.
Reliable Protection with Three-Phase Current Measurement
The Mersen M1023258 combines the circuit protection capabilities of NH fuse-links with safe load switching and electrical isolation. When fitted with appropriately rated fuse-links, it helps protect conductors and downstream electrical equipment against overloads and high short-circuit currents.
Its three integrated calibrated current transformers provide current measurement across every phase. This allows the unit to support metering, monitoring and load-management systems while avoiding the additional space and installation work associated with separate external transformers.
Typical Applications
- Industrial low-voltage switchboards.
- Transformer substations and feeder pillars.
- Commercial and industrial distribution units.
- Cable distribution cabinets.
- High-current machinery power systems.
- Motor control centres.
- Electrical metering and load-monitoring systems.
- OEM switchboard and panel manufacturing.
Technical Specifications
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| Mounting Type | Busbar system 185 mm | |
|---|---|---|
| Current | 630 A | |
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | Fuse switch disconnector | |
| Voltage | 690 V | |
| Item number | M1023258 | |
| Catalogue No | 1.370.076 | |
| Description | NH fuse-switch disconnector MULTIVERT® Size 3 630A 1x3-Pole switching Bus bar system 185mm V-terminal ct3P c. | |
| EAN/UPC Code | 9008567008355 | |
| Frequency (Hz) | 50 ... 60 Hz | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 630 A | |
| Utilization Category | AC 23 B @ Ue = AC 400 V; Ie = 630 A AC 22 B @ Ue = AC 500 V; Ie = 630 A AC 21 B @ Ue = AC 690 V; Ie = 630 A | |
| Switchability | 1x3-pole switching | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Short Circuit Current Rating (SCCR) | 80kA@Ue = AC 400 V; Ie = 630 A / 80kA@Ue = AC 500 V; Ie = 630 A / 80kA@Ue = AC 690 V; Ie = 500 A | |
| Fuse Size | 3 | |
| Design Details | MULTIVERT® 1.370.000 with integrated C.T. 600/5A, 5,00 VA, class 0,5; calibrated, for triple pole measurement | |
| Number of Poles | 3-Pole | |
| Degree of Pollution | 3 | |
| Rated Impulse Withstand Voltage | 12 kV | |
| Rated Insulation Voltage | 1000 V | |
| Rated SC Withstand | 12.6 kA / 1 s | |
| Max Power dissipation of Fuse Links Pn | 48 W | |
| Max Power dissipation of Solid Links Pn | 17.5 W | |
| Power Dissipation by Ith without Fuse-Links | 95 W | |
| Rated short circuit making capacity with solid links Icm | 16 kA | |
| Installation Mounting | Bus bar system 185 mm | |
| Product Width | 98 mm | |
| Product Length | 190 mm | |
| Product Height | 685 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 5.9 kg | |
| Sell Pack Width | 100 mm | |
| Sell Pack Length | 688 mm | |
| Sell Pack Height | 195 mm | |
| Product group | IEC Fuse Switch Disconnectors | |
| Conventional Free Air thermal Current With Fuse-Links Ith | 630 A | |
| Product Weight | 5.9 kg | |
| Conventional Free Air thermal Current - Solid Links | 800 A |
Frequently Asked Questions
What is the Mersen M1023258 used for?
The M1023258 is used to switch, isolate and provide fused protection for three-phase low-voltage distribution circuits while measuring current across all three phases.
What is the current rating of the M1023258?
The fuse-switch disconnector has a conventional free-air thermal current rating of 630 A when used with suitable NH fuse-links.
Which fuse-links are compatible with this device?
The M1023258 is designed for NH size 3 fuse-links manufactured in accordance with IEC/EN 60269-2 and VDE 0636-2.
Which current transformers are integrated into the unit?
The unit contains three calibrated 600/5 A, 5 VA, Class 0.5 current transformers for three-pole current measurement.
What busbar system does the M1023258 fit?
This MULTIVERT fuse-switch disconnector is designed for direct installation onto a standard 185 mm busbar system.
Trusted for High-Current Power Distribution
Mersen MULTIVERT fuse-switch disconnectors are widely used by electrical engineers, panel builders and industrial operators to provide dependable circuit protection, safe isolation and accurate current monitoring in demanding power distribution systems.
