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MERSEN FUSE MV2 400A/185mm 3P3 1.250.084 1.250.084

MERSEN FUSE MV2 400A/185mm 3P3 1.250.084 1.250.084

Robust NH fuse-switch disconnector accommodating up to 400A across 1×3-pole switching on a 185mm bus bar system, featuring secure M12 screw connections and integrated current transformer.

SKU: P1023214Alt SKU: 1.250.084MPN: P1023214
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List Price £567.92 ex VAT
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Why Choose the Mersen P1023214 MULTIVERT® Fuse Switch Disconnector?

The Mersen P1023214 is a robust NH fuse switch disconnector with an integrated current transformer, designed for safe switching, circuit protection and current monitoring in industrial low-voltage power distribution systems. Part of the established Mersen MULTIVERT® 400 A series, it is engineered for direct installation onto 185 mm busbar systems in three-pole arrangements.

Designed for use with NH Size 2 fuse links, the P1023214 combines dependable load switching with a factory-fitted 400/5 A Class 1 current transformer in pole one. This integrated measurement capability supports accurate single-pole current monitoring while reducing the need for a separately mounted transformer.

With a rated current of 400 A and a rated operating voltage of 690 V AC, the P1023214 is well suited to industrial switchboards, transformer substations and commercial distribution equipment. Its M12 screw connections, modular construction and compact busbar-mounted format support efficient installation and straightforward maintenance.

Key Advantages

  • Heavy-duty NH fuse switch disconnector for industrial power distribution.
  • 400 A rated current for high-load electrical applications.
  • Integrated 400/5 A Class 1 current transformer for single-pole measurement.
  • Designed for direct installation on 185 mm busbar systems.
  • Reliable three-pole switching supports safe circuit isolation.
  • Modular MULTIVERT® construction simplifies installation and maintenance.

Key Features

  • Mersen MULTIVERT® 400 A series.
  • 400 A rated operational current.
  • 690 V AC rated operating voltage.
  • Compatible with NH Size 2 fuse links.
  • Three-pole switching configuration.
  • Factory-fitted 400/5 A, 3.75 VA, Class 1 current transformer.
  • Single-pole measurement with the current transformer fitted in pole one.
  • M12 screw connections for secure electrical installation.
  • Direct mounting on a 185 mm busbar system.

Reliable Switching with Integrated Current Measurement

NH fuse switch disconnectors combine fuse-based overcurrent protection with a manually operated switching mechanism, allowing electrical circuits to be isolated safely for inspection and maintenance. The Mersen P1023214 is designed to perform these functions within compact industrial busbar assemblies while supporting secure switching under load.

The integrated current transformer provides a proportional 5 A secondary signal from a 400 A primary current, enabling compatible meters, monitoring equipment and protection systems to measure the load on one pole. This combined switching and measurement design can reduce wiring complexity and save valuable space within the distribution cabinet.

Typical Applications

  • Industrial switchboards and power distribution panels.
  • Transformer substations and cable distribution cabinets.
  • Commercial and industrial building distribution systems.
  • Motor control centres.
  • Energy monitoring and load measurement systems.
  • OEM electrical panels and machinery installations.

Technical Specifications

Current 400 A
Phase Three Phase
Item number P1023214
Catalogue No 1.250.084
Description NH fuse-switch disconnector MULTIVERT® Size 2 400A 1x3-Pole switching Bus bar system 185mm Screw M12 ct1P
EAN/UPC Code 9008567000182
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 1 for single pole measurement (ready fitted in pole 1)
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 P1023214 used for?

The P1023214 is used for three-pole switching, fuse protection and single-pole current measurement in industrial low-voltage power distribution systems.

What fuse size is compatible with this switch disconnector?

The unit is designed for use with compatible NH Size 2 fuse links rated up to 400 A.

What current transformer is fitted to the P1023214?

It includes a factory-fitted 400/5 A, 3.75 VA, Class 1 current transformer installed in pole one for single-pole measurement.

Which busbar system does the unit fit?

The P1023214 is designed for direct installation onto a 185 mm busbar system using M12 screw connections.

Where is this fuse switch disconnector typically installed?

It is commonly installed in industrial switchboards, transformer substations, distribution cabinets and energy monitoring systems requiring reliable isolation and current measurement.

Trusted for Industrial Power Distribution

Mersen MULTIVERT® fuse switch disconnectors are widely used by panel builders, electrical engineers and industrial operators to provide dependable switching, fuse protection and measurement functionality in low-voltage power distribution systems.

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