Robust NH fuse-switch disconnector engineered for reliable, high-capacity switching and protection in demanding industrial environments. Features dual V-terminals and optimised for 185mm bus bar systems.
£500.99
The Mersen L1023211 is a heavy-duty NH Size 2 vertical fuse switch disconnector from the MULTIVERT® 400A series, engineered for safe switching, isolation and protection of low-voltage power distribution systems. Designed for installation on a standard 185 mm busbar system, it features a 1 × 3-pole switching configuration with dual V-terminals per phase, making it ideal for installations requiring multiple outgoing conductors.
Rated at 400 A and 690 V AC, the L1023211 is designed for use with NH Size 2 fuse links manufactured in accordance with IEC/EN 60269-2. Its modular MULTIVERT® construction enables rapid installation, excellent accessibility during maintenance and reliable long-term performance in demanding industrial environments.
The innovative 2 V-terminal connections per phase provide greater flexibility when terminating multiple cables or busbar links, reducing the need for additional distribution blocks while maintaining a neat and professional switchboard layout.
The Mersen L1023211 combines safe load switching, circuit isolation and NH fuse protection in a compact assembly suitable for industrial switchboards and commercial electrical installations. Its dual V-terminal arrangement allows multiple cable terminations directly at the switch, simplifying wiring and reducing installation time.
Designed as part of the modular MULTIVERT® platform, the unit offers dependable operation, high levels of operator safety and easy integration into modern power distribution equipment while complying with IEC 60947-3 requirements.
| Current | 400 A |
|---|---|
| Phase | Three Phase |
| Item number | L1023211 |
| Catalogue No | 1.270.900 |
| Description | NH fuse-switch disconnector MULTIVERT® Size 2 400A 1x3-Pole switching Bus bar system 185mm V-terminal x2 |
| EAN/UPC Code | 9008567002421 |
| 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 |
| 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 | 6.08 kg |
| Sell Pack Width | 230 mm |
| Sell Pack Length | 781 mm |
| Sell Pack Height | 125 mm |
| Product group | IEC Fuse Switch Disconnectors |
| Conventional Free Air thermal Current With Fuse-Links Ith | 400 A |
| Product Weight | 6.08 kg |
| Conventional Free Air thermal Current - Solid Links | 630 A |
| HS Code | 85365080 |
| Country of Manufacture | Hungary |
The Mersen L1023211 is used for switching, isolating and protecting low-voltage electrical circuits in industrial and commercial power distribution systems.
The L1023211 has a rated operational current of 400 A.
The unit is designed for NH Size 2 fuse links manufactured to IEC/EN 60269-2.
The L1023211 features two V-terminal connections per phase, making it ideal for applications requiring multiple outgoing cable terminations.
The switch disconnector is designed for installation on a standard 185 mm busbar system.
Mersen MULTIVERT® fuse switch disconnectors are trusted by electrical engineers, panel builders and utility operators worldwide for delivering dependable circuit protection, safe isolation and reliable long-term performance in demanding 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...