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.
£567.92
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.
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.
| 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 |
The P1023214 is used for three-pole switching, fuse protection and single-pole current measurement in industrial low-voltage power distribution systems.
The unit is designed for use with compatible NH Size 2 fuse links rated up to 400 A.
It includes a factory-fitted 400/5 A, 3.75 VA, Class 1 current transformer installed in pole one for single-pole measurement.
The P1023214 is designed for direct installation onto a 185 mm busbar system using M12 screw connections.
It is commonly installed in industrial switchboards, transformer substations, distribution cabinets and energy monitoring systems requiring reliable isolation and current measurement.
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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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...