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MERSEN FUSE MV3 630A/185mm 3P3 1.350.095 1.350.095

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.

SKU: L1023257Alt SKU: 1.350.095MPN: L1023257
Price
List Price £886.15 ex VAT
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£886.15
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Manufacturer Lead Time

£886.15

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

Current 630 A
Phase Three Phase
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
Poles 3-pole
Device Type Fuse switch disconnector
Voltage 690 V

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.

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