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.
£979.15
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.
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.
| 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 |
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.
The unit has a rated operational current of 400 A.
Yes. It is supplied with integrated 400/5 A Class 0.5 calibrated current transformers for accurate three-phase current measurement.
The N1023213 is designed for direct installation onto a standard 185 mm busbar system.
The unit features three M12 bolt cable terminations for secure high-current conductor connections.
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.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...