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MERSEN FUSE MV2 400A/185mm 3P1 1.200.074 1.200.074
Robust NH fuse-switch disconnector engineered for reliable power distribution up to 400A with 3×1-pole switching and compatible with 185mm bus bar system.
£768.18
Why Choose the Mersen D1023204 MULTIVERT® Fuse-Switch Disconnector?
The Mersen D1023204 is a high-performance MULTIVERT® NH vertical fuse-switch disconnector designed for safe switching, isolation and overcurrent protection in demanding industrial low-voltage power distribution systems. Featuring catalogue number 1.200.074, this model is designed for NH Size 2 fuse-links, supports currents up to 400 A, and mounts directly onto a 185 mm busbar system.
This version incorporates an integrated 400/5 A current transformer (CT) with Class 0.5 accuracy, factory calibrated for triple-pole measurement. It enables accurate energy monitoring and metering without requiring separate external CT assemblies, simplifying switchboard construction and reducing installation time.
The MULTIVERT® modular design provides fast installation, compact dimensions and excellent protection during operation and maintenance. With robust 3 × M12 bolt cable termination, it is ideal for industrial switchboards, motor control centres, OEM machinery and commercial power distribution systems.
Key Advantages
- Combines switching, isolation and fuse protection in one compact device.
- Integrated 400/5 A calibrated current transformer for triple-pole metering.
- Class 0.5 CT accuracy suitable for precision measurement.
- Rated at 400 A and 690 V AC.
- Designed for NH Size 2 fuse-links.
- Direct mounting onto 185 mm busbar systems.
- Heavy-duty M12 bolted cable terminals.
- Compact installation depth helps save switchboard space.
Key Features
- Mersen MULTIVERT® 400A series.
- NH Size 2 vertical fuse-switch disconnector.
- Rated current: 400 A.
- Rated operational voltage: 690 V AC.
- Integrated 400/5 A CT.
- Class 0.5 calibrated current transformer.
- Triple-pole measurement.
- 3 × 1-pole switching configuration.
- 185 mm busbar mounting.
- 3 × M12 bolted cable connections.
- 50 / 60 Hz operation.
- RoHS compliant.
Integrated Metering for Modern Switchboards
The integrated Class 0.5 current transformer eliminates the need for separately mounted CTs, reducing installation time while improving switchboard layout. Triple-pole measurement enables accurate monitoring of three-phase electrical systems, making the D1023204 an excellent choice for energy management and industrial metering applications.
Its modular MULTIVERT® construction allows rapid installation onto standard 185 mm busbar systems while maintaining high levels of operator safety and mechanical reliability. The compact design also helps maximise available cabinet space.
Typical Applications
- Industrial switchboards.
- Motor control centres.
- Power distribution panels.
- Energy metering installations.
- OEM machinery.
- Manufacturing plants.
- Commercial electrical infrastructure.
- Industrial automation systems.
Technical Specifications
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| Mounting Type | Busbar system 185 mm | |
|---|---|---|
| Current | 400 A | |
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | Fuse switch disconnector | |
| Voltage | 690 V | |
| Item number | D1023204 | |
| Catalogue No | 1.200.074 | |
| Description | NH fuse-switch disconnector MULTIVERT® Size 2 400A 3x1-Pole switching Bus bar system 185mm Screw M12 ct3P c. | |
| EAN/UPC Code | 9008567008270 | |
| 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 | 3x1-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® 1.200.000 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 | 4.7 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 | 4.7 kg | |
| Conventional Free Air thermal Current - Solid Links | 630 A |
Frequently Asked Questions
What is the Mersen D1023204 used for?
The D1023204 provides switching, isolation, fuse protection and integrated current measurement for industrial low-voltage power distribution systems.
Which fuse size does it support?
It is designed for NH Size 2 fuse-links.
Does this model include a current transformer?
Yes. It features a factory-installed 400/5 A Class 0.5 calibrated current transformer for triple-pole measurement.
Which busbar system is required?
The unit is designed for direct installation onto a 185 mm busbar system.
What is the rated current?
The Mersen D1023204 has a rated operational current of 400 A.
Trusted for Industrial Power Distribution
Mersen MULTIVERT® fuse-switch disconnectors are trusted worldwide for providing dependable circuit protection, safe isolation and integrated power monitoring in demanding industrial electrical installations.
