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MERSEN FUSE MV3 630A/185mm 3P3 1.350.095 1.350.095
Robust NH fuse-switch disconnector for reliable and safe switching of currents up to 630A in three-phase systems, compatible with 185mm bus bar systems and featuring integrated current transformer.
£531.69
Why Choose the Mersen L1023257 MULTIVERT® Fuse Switch Disconnector?
The Mersen L1023257 is a premium NH Size 3 vertical fuse switch disconnector from the MULTIVERT® 630A series, designed to provide safe switching, isolation and circuit protection in demanding low-voltage power distribution systems. Suitable for installation on a standard 185 mm busbar system, this model incorporates an integrated 600/5 A Class 1 current transformer for triple-pole measurement, making it ideal for power monitoring and energy management applications.
Rated at 630 A and 690 V AC, the L1023257 is compatible with NH Size 3 fuse links manufactured in accordance with IEC/EN 60269-2. The integrated current transformer enables accurate measurement across all three phases without increasing the installation footprint, helping simplify switchboard design and reducing installation time.
Featuring robust 3 × M12 bolt cable terminations, a compact MULTIVERT® construction and compliance with IEC 60947-3, the L1023257 is well suited to industrial switchboards, utility substations, feeder pillars and commercial power distribution installations.
Key Advantages
- Combines switching, isolation, fuse protection and integrated three-phase current measurement.
- 630 A rated current for high-capacity power distribution.
- 690 V AC rated operational voltage.
- Factory-installed 600/5 A Class 1 current transformer.
- Measures all three phases simultaneously.
- Designed for standard 185 mm busbar systems.
- Compact installation with no increase in mounting depth.
- Reliable MULTIVERT® modular construction for easy maintenance.
Key Features
- Mersen MULTIVERT® 630A series.
- Model: L1023257.
- Catalogue number: 1.350.095.
- NH Size 3 fuse compatibility.
- 630 A rated current.
- 690 V AC rated operational voltage.
- 1 × 3-pole switching configuration.
- Integrated 600/5 A Class 1 current transformer.
- Triple-pole current measurement.
- 3 × M12 bolt cable terminations.
- 185 mm busbar mounting.
Integrated Current Monitoring for High-Power Installations
The Mersen L1023257 combines high-capacity switching and isolation with a factory-integrated current transformer, enabling accurate three-phase current monitoring without requiring separate external CTs. This simplifies installation while providing reliable measurement for metering, energy management and protection systems.
As part of the MULTIVERT® modular platform, the switch disconnector provides dependable operation, compact installation and high levels of operator safety, making it an excellent choice for industrial power distribution and utility infrastructure.
Typical Applications
- Industrial switchboards.
- Transformer substations.
- Feeder pillars.
- Utility distribution systems.
- Commercial power distribution panels.
- Energy monitoring installations.
- Motor control centres.
- OEM switchgear assemblies.
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 | L1023257 | |
| Catalogue No | 1.350.095 | |
| Description | NH fuse-switch disconnector MULTIVERT® Size 3 630A 1x3-Pole switching Bus bar system 185mm Screw M12 ct3P c. | |
| EAN/UPC Code | 9008567000328 | |
| 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® 1.350.000 with integrated C.T. 600/5A, 5,00 VA, class 1 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 | 6.5 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 | 6.5 kg | |
| Conventional Free Air thermal Current - Solid Links | 800 A | |
| HS Code | 85365080 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen L1023257 used for?
The Mersen L1023257 is used for switching, isolating and protecting high-current electrical circuits while providing integrated three-phase current measurement.
What is the current rating?
The L1023257 has a rated operational current of 630 A.
What current transformer is fitted?
The unit includes a factory-installed 600/5 A Class 1 current transformer with a 5 VA burden for triple-pole current measurement.
Which fuse size is compatible?
The switch disconnector is designed for NH Size 3 fuse links manufactured to IEC/EN 60269-2.
What busbar system does it require?
The L1023257 is designed for installation on a standard 185 mm busbar system.
Trusted Power Distribution Technology from Mersen
Mersen MULTIVERT® fuse switch disconnectors are trusted worldwide by electrical engineers, panel builders and utility operators for delivering dependable circuit protection, safe isolation and integrated current monitoring in demanding low-voltage power distribution systems.
