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MERSEN FUSE MV3 630A/185mm 3P3 1.350.076 1.350.076
Engineered for high-capacity industrial power distribution, the MULTIVERT® Size 3 630A 1×3-pole fuse-switch disconnector guarantees reliable protection and safe disconnection in demanding environments. Designed for 185mm bus bar systems, it supports straightforward integration into existing panels and assemblies.
£845.27
Why Choose the Mersen J1023255 MULTIVERT® Fuse Switch Disconnector?
The Mersen J1023255 is a high-performance NH fuse switch disconnector designed for reliable switching, isolation and overcurrent protection in low-voltage electrical distribution systems. Part of the Mersen MULTIVERT® 630A series, it is engineered for installation on 185 mm busbar systems in three-pole arrangements.
This Size 3 fuse switch disconnector combines a compact vertical format with an integrated current transformer for three-pole measurement. Its modular construction supports fast installation, straightforward maintenance and a high degree of protection for personnel working on industrial switchboards and power distribution equipment.
With a rated current of 630 A and a rated operating voltage of 690 V AC, the J1023255 is suitable for demanding industrial power applications. It accepts NH Size 3 fuse-links and features M12 screw connections, an 80 kA short-circuit current rating and a compact standard installation depth of 123 mm.
Key Advantages
- Reliable switching, isolation and overcurrent protection.
- 630 A current rating for high-power distribution applications.
- 690 V AC rated operating voltage.
- Designed for 185 mm busbar systems.
- Integrated 600/5 A current transformer for three-pole measurement.
- Compact vertical design helps conserve switchboard space.
- Modular construction supports efficient installation and maintenance.
Key Features
- Mersen MULTIVERT® 630A series.
- 630 A rated current.
- 690 V AC rated voltage.
- NH Size 3 fuse-link compatibility.
- One three-pole switching configuration.
- 185 mm busbar mounting system.
- M12 screw cable connections.
- Integrated calibrated current transformer.
- 80 kA short-circuit current rating.
- RoHS-compliant construction.
Reliable Protection and Measurement for Power Distribution
NH fuse switch disconnectors such as the Mersen J1023255 combine circuit protection with a safe means of switching and isolating electrical loads. The device accommodates replaceable NH fuse-links, helping protect cables and downstream equipment against overloads and short circuits while simplifying maintenance.
The integrated 600/5 A current transformer provides calibrated three-pole current measurement without requiring a separate external transformer assembly. This makes the J1023255 particularly suitable for switchboards requiring dependable protection together with accurate load monitoring.
Typical Applications
- Industrial low-voltage switchboards.
- Main power distribution panels.
- Motor control centres.
- Manufacturing and process plants.
- Commercial and infrastructure distribution systems.
- OEM electrical control equipment.
Technical Specifications
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| Mounting Type | Busbar system 185 mm | |
|---|---|---|
| Current | 630 A | |
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | Fuse switch disconnector | |
| Voltage | 690 V | |
| Item number | J1023255 | |
| Catalogue No | 1.350.076 | |
| Description | NH fuse-switch disconnector MULTIVERT® Size 3 630A 1x3-Pole switching Bus bar system 185mm Screw M12 ct3P | |
| EAN/UPC Code | 9008567008348 | |
| Frequency (Hz) | 50 ... 60 Hz | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 630 A | |
| Utilization Category | AC 23 B @ Ue = AC 400 V; Ie = 630 A AC 22 B @ Ue = AC 500 V; Ie = 630 A AC 21 B @ Ue = AC 690 V; Ie = 630 A | |
| Switchability | 1x3-pole switching | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Short Circuit Current Rating (SCCR) | 80kA@Ue = AC 400 V; Ie = 630 A / 80kA@Ue = AC 500 V; Ie = 630 A / 80kA@Ue = AC 690 V; Ie = 500 A | |
| Fuse Size | 3 | |
| Design Details | MULTIVERT® 1.350.000 with integrated C.T. 600/5A, 5,00 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 | 12.6 kA / 1 s | |
| Max Power dissipation of Fuse Links Pn | 48 W | |
| Max Power dissipation of Solid Links Pn | 17.5 W | |
| Power Dissipation by Ith without Fuse-Links | 95 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 | 5.8 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 | 630 A | |
| Product Weight | 5.8 kg | |
| Conventional Free Air thermal Current - Solid Links | 800 A | |
| HS Code | 85365080 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen J1023255 used for?
It is used for switching, isolation and overcurrent protection in industrial low-voltage power distribution systems, while its integrated current transformer enables three-pole current measurement.
What is the rated current of the J1023255?
The Mersen J1023255 has a rated current of 630 A.
Which fuse-links are compatible with this disconnector?
It is designed for NH Size 3 fuse-links manufactured in accordance with applicable IEC and EN standards.
Does the J1023255 include a current transformer?
Yes. It includes a calibrated 600/5 A, 5 VA, Class 0.5 current transformer for three-pole measurement.
How is the J1023255 installed?
It is mounted vertically on a 185 mm busbar system and uses M12 screw connections for secure electrical termination.
Trusted by Electrical Professionals Worldwide
Mersen MULTIVERT® fuse switch disconnectors are widely specified by panel builders and electrical engineers for dependable circuit protection, safe load isolation and efficient integration into industrial power distribution systems.
