NH fuse-switch disconnector MULTIVERT® Size 2 400A offers secure switching and disconnection in low-voltage power distribution systems with robust V-terminal design and FM-ready integration.
£644.63
The Mersen J1023209 is a premium NH fuse switch disconnector designed for safe switching, isolation and circuit protection in low voltage power distribution systems. As part of the Mersen MULTIVERT® 400A series, it is engineered for installation on 185 mm busbar systems and is suitable for industrial switchboards, motor control centres and OEM electrical equipment.
The modular MULTIVERT® platform delivers fast installation, straightforward maintenance and dependable long-term performance. The J1023209 features a compact vertical design with V-terminal connections and is supplied FM ready, allowing the connection of indication facilities for enhanced monitoring and control.
Rated at 400 A with a 690 V AC operating voltage, this Size 2 fuse switch disconnector accepts NH Size 2 fuse-links and provides reliable protection in demanding industrial environments while optimising valuable cabinet space.
The J1023209 provides safe isolation, reliable switching and effective overcurrent protection for industrial electrical installations. Its compact vertical construction reduces cabinet space requirements while maintaining easy access for inspection and maintenance.
The MULTIVERT® modular design enables quick installation and supports dependable long-term operation in manufacturing facilities, infrastructure projects and commercial electrical distribution systems.
| Current | 400 A |
|---|---|
| Phase | Three Phase |
| Item number | J1023209 |
| Catalogue No | 1.270.100 |
| Description | NH fuse-switch disconnector MULTIVERT® Size 2 400A 1x3-Pole switching Bus bar system 185mm V-terminal FM ready |
| EAN/UPC Code | 9008567000236 |
| 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® 1.270.000 with cabling of instrument leads for indication facilities |
| 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 | 5.1 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 | 5.1 kg |
| Conventional Free Air thermal Current - Solid Links | 630 A |
| HS Code | 85365080 |
| Country of Manufacture | Hungary |
It is an NH fuse switch disconnector designed for switching, isolation and overcurrent protection within industrial low voltage electrical distribution systems.
The J1023209 has a rated current of 400 A.
This fuse switch disconnector is rated for operation up to 690 V AC.
FM ready indicates the unit is prepared for the connection of indication facilities, allowing enhanced monitoring of the switch disconnector.
It is designed for installation on 185 mm busbar systems within industrial switchboards, power distribution panels and motor control centres.
Mersen MULTIVERT® fuse switch disconnectors are trusted by electrical engineers, switchboard manufacturers and panel builders for delivering safe operation, dependable protection and long-term performance in industrial power distribution systems.
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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...