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MERSEN FUSE MV2 400A/185mm 3P3 1.250.074 1.250.074

MERSEN FUSE MV2 400A/185mm 3P3 1.250.074 1.250.074

Robust NH fuse-switch disconnector engineered for secure and efficient protection of low-voltage power distribution, supporting up to 400A across three poles with MULTIVERT® Size 2 design and M12 screw terminals.

SKU: N1023213Alt SKU: 1.250.074MPN: N1023213
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List Price £979.15 ex VAT
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Why Choose the Mersen N1023213 MULTIVERT® NH Fuse-Switch Disconnector?

The Mersen N1023213 is a high-performance MULTIVERT® NH vertical fuse-switch disconnector designed for industrial low-voltage power distribution systems. Also identified by catalogue number 1.250.074, this 400 A unit is designed for NH size 2 fuse-links and features factory-fitted 400/5 A Class 0.5 calibrated current transformers for accurate three-phase current measurement. It is designed for direct installation onto standard 185 mm busbar systems.

The N1023213 incorporates a 1 × three-pole switching arrangement with secure 3 × M12 bolt cable terminations, providing reliable switching, isolation and overcurrent protection for demanding industrial installations. The modular MULTIVERT® design enables rapid installation, simplified maintenance and excellent operator safety.

Rated for operation up to 690 V AC at 50/60 Hz, this fuse-switch disconnector is ideal for switchboards, motor control centres, energy monitoring systems and OEM panel building where highly accurate three-phase current measurement is required.

Key Advantages

  • 400 A rated current for demanding industrial applications.
  • Designed for NH size 2 fuse-links.
  • Integrated 400/5 A Class 0.5 calibrated current transformers.
  • Provides accurate three-phase current measurement.
  • Designed for 185 mm busbar systems.
  • Three-pole switching configuration.
  • M12 bolt cable terminations ensure secure conductor connections.
  • Compact MULTIVERT® modular construction simplifies installation and servicing.

Key Features

  • Mersen MULTIVERT® Size 2 fuse-switch disconnector.
  • 400 A rated operational current.
  • 690 V AC rated voltage.
  • Designed for NH size 2 fuse-links.
  • 185 mm busbar mounting.
  • 1 × three-pole switching.
  • 3 × M12 bolt cable terminations.
  • Integrated 400/5 A Class 0.5 calibrated CTs for three-phase measurement.
  • Rated short-circuit current up to 120 kA (application dependent).
  • Suitable for industrial low-voltage distribution systems.

Integrated Three-Phase Current Monitoring

The Mersen N1023213 combines dependable circuit protection with factory-installed calibrated current transformers for accurate three-phase current monitoring. This integrated solution reduces installation time while eliminating the need for separate externally mounted current transformers in many switchboard applications.

Its modular MULTIVERT® construction enables rapid installation on standard 185 mm busbar systems while delivering safe isolation, reliable switching and long-term performance in demanding industrial environments. The integrated calibrated CTs make this unit ideal for energy monitoring, feeder metering and process control applications.

Typical Applications

  • Industrial low-voltage switchboards.
  • Main and sub-distribution panels.
  • Motor control centres.
  • Energy monitoring systems.
  • Industrial automation.
  • OEM switchboard manufacturing.
  • Infrastructure electrical distribution.
  • Commercial power distribution systems.

Technical Specifications

Current 400 A
Phase Three Phase
Item number N1023213
Catalogue No 1.250.074
Description NH fuse-switch disconnector MULTIVERT® Size 2 400A 1x3-Pole switching Bus bar system 185mm Screw M12 ct3P c.
EAN/UPC Code 9008567008294
Frequency (Hz) 50 ... 60 Hz
Rated voltage AC IEC 690 V
Ampere Rating 400 A
Utilization Category AC 23 B @ Ue = AC 400 V; Ie = 400 A AC 22 B @ Ue = AC 500 V; Ie = 400 A AC 21 B @ Ue = AC 690 V; Ie = 400 A
Switchability 1x3-pole switching
RoHS Compliant Yes
AC or DC AC
Short Circuit Current Rating (SCCR) 120kA@Ue = AC 400 V; Ie = 400 A / 120kA@Ue = AC 500 V; Ie = 400 A / 120kA@Ue = AC 690 V; Ie = 315 A / 100kA@Ue = AC 690 V; Ie = 400 A
Fuse Size 2
Design Details MULTIVERT® 1.250.000 with integrated C.T. 400/5A, 3,75 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 8 kA / 1 s
Max Power dissipation of Fuse Links Pn 34 W
Max Power dissipation of Solid Links Pn 9 W
Power Dissipation by Ith without Fuse-Links 61 W
Power Dissipation by Ith without Solid Links 151 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 4.9 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 400 A
Product Weight 4.9 kg
Conventional Free Air thermal Current - Solid Links 630 A
Poles 3-pole
Device Type Fuse switch disconnector
Voltage 690 V

Frequently Asked Questions

What is the Mersen N1023213 used for?

The N1023213 is an NH size 2 vertical fuse-switch disconnector providing switching, isolation and circuit protection with integrated calibrated current transformers for accurate three-phase current measurement.

What is the current rating?

The unit has a rated operational current of 400 A.

Does the N1023213 include current transformers?

Yes. It is supplied with integrated 400/5 A Class 0.5 calibrated current transformers for accurate three-phase current measurement.

Which busbar system is it designed for?

The N1023213 is designed for direct installation onto a standard 185 mm busbar system.

What cable termination does it use?

The unit features three M12 bolt cable terminations for secure high-current conductor connections.

Trusted Industrial Circuit Protection

Mersen MULTIVERT® fuse-switch disconnectors are trusted by panel builders, electrical contractors and industrial engineers for dependable circuit protection, safe isolation and accurate integrated power monitoring in low-voltage distribution systems.

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