Reliable 3-pole NH fuse-switch disconnector for bus bar systems with 185 mm spacing, supporting applications up to 250A with integrated current transformer and robust M10 screw connections.
£709.91
The Mersen R1023193 is a premium NH vertical fuse switch disconnector designed for safe isolation, switching and protection of industrial low voltage power distribution systems. As part of the proven MULTIVERT® 250 A series, it is engineered for installation on 185 mm busbar systems, providing dependable performance for switchboards, motor control centres and OEM electrical equipment.
The MULTIVERT® modular design allows fast installation while providing a high degree of protection during operation and maintenance. This version incorporates an integrated 250/5 A Class 1 current transformer factory fitted in pole 1 for single-pole current measurement, eliminating the need for additional CT installation.
With a 250 A rated current, 690 V AC operating voltage and NH Size 1 fuse compatibility, the R1023193 is ideally suited to demanding industrial applications requiring reliable switching, circuit protection and current monitoring in a compact three-pole assembly.
The Mersen R1023193 combines safe load switching, circuit isolation and fuse protection within a single compact assembly. Its integrated current transformer enables accurate current measurement without requiring separate mounting hardware, reducing installation time while improving panel efficiency.
Designed for demanding industrial environments, the MULTIVERT® system provides high mechanical strength, straightforward fuse replacement and reliable long-term operation for critical electrical infrastructure.
| Current | 250 A |
|---|---|
| Phase | Three Phase |
| Item number | R1023193 |
| Catalogue No | 1.150.083 |
| Description | NH fuse-switch disconnector MULTIVERT® Size 1 250A 1x3-Pole switching Bus bar system 185mm Screw M10 ct1P |
| EAN/UPC Code | 9008567000069 |
| Frequency (Hz) | 50 ... 60 Hz |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 250 A |
| Utilization Category | AC 23 B @ Ue = AC 400 V; Ie = 250 A AC 23 B @ Ue = AC 500 V; Ie = 250 A AC 22 B @ Ue = AC 690 V; Ie = 250 A |
| Switchability | 1x3-pole switching |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Short Circuit Current Rating (SCCR) | 120kA@Ue = AC 400 V; Ie = 250 A / 120kA@Ue = AC 500 V; Ie = 250 A / 120kA@Ue = AC 690 V; Ie = 250 A |
| Fuse Size | 1 |
| Design Details | MULTIVERT® 1.150.000 with integrated C.T. 250/5A, 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 | 23 W |
| Max Power dissipation of Solid Links Pn | 2.6 W |
| Power Dissipation by Ith without Fuse-Links | 35 W |
| Power Dissipation by Ith without Solid Links | 90 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 | 4.8 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 | 250 A |
| Product Weight | 4.8 kg |
| Conventional Free Air thermal Current - Solid Links | 400 A |
It is an NH Size 1 fuse switch disconnector used for switching, isolation and protection of industrial low voltage power distribution systems.
The R1023193 has a rated operating current of 250 A.
Yes. It includes a factory-fitted 250/5 A Class 1 current transformer installed in pole 1 for single-pole current measurement.
The unit is designed for installation onto a 185 mm busbar system.
The R1023193 is designed for NH Size 1 fuse-links in accordance with IEC/EN 60269-2.
Mersen MULTIVERT® fuse switch disconnectors are trusted worldwide by panel builders, OEMs and industrial electrical engineers for delivering reliable switching, dependable circuit protection and efficient integration into modern 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...