Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE MV1 250A/185mm 3P1 1.100.062 1.100.062
The NH fuse-switch disconnector MULTIVERT® Size 1 250A offers reliable and safe operation for demanding bus bar systems, featuring robust 3×1-pole switching to support high current applications up to 250A. Designed for 185mm busbar systems with M10 screw terminals, it provides secure and efficient power distribution.
£401.45
Why Choose the Mersen L1023165 MULTIVERT® Fuse Switch Disconnector?
The Mersen L1023165 is a premium NH Size 1 vertical fuse switch disconnector from the MULTIVERT® 250A series, engineered for safe switching, isolation and protection of low-voltage electrical distribution systems. Designed for installation on a 185 mm busbar system, it combines reliable circuit protection with an integrated 250/5 A current transformer for accurate single-phase current measurement.
Rated at 250 A and 690 V AC, the L1023165 accepts NH Size 1 fuse links compliant with IEC/EN 60269-2. The factory-installed, calibrated Class 0.5 current transformer is pre-fitted in pole 1, making this model ideal for energy monitoring, metering and power management applications while maintaining full switching and isolation functionality.
Its robust construction, 3 × M10 bolt cable terminations and modular MULTIVERT® design enable fast installation, simple maintenance and dependable long-term operation in industrial switchboards, commercial distribution boards and utility infrastructure.
Key Advantages
- Combines switching, isolation, circuit protection and current measurement.
- 250 A rated current for demanding industrial installations.
- 690 V AC operating voltage.
- Integrated 250/5 A Class 0.5 calibrated current transformer.
- Factory-fitted CT for single-pole current measurement.
- Designed for standard 185 mm busbar systems.
- Three M10 cable terminals provide secure conductor connections.
- Suitable for industrial, commercial and utility power distribution.
Key Features
- Mersen MULTIVERT® 250A series.
- NH Size 1 fuse switch disconnector.
- 250 A rated current.
- 690 V AC rated operational voltage.
- 3 × 1-pole switching configuration.
- Integrated 250/5 A, 3.75 VA Class 0.5 current transformer.
- Factory-calibrated CT installed in pole 1.
- 185 mm busbar mounting.
- 3 × M10 bolt cable connections.
- Suitable for 50 / 60 Hz electrical systems.
Integrated Current Measurement for Modern Power Distribution
Unlike a standard fuse switch disconnector, the Mersen L1023165 incorporates a precision current transformer, allowing electrical current to be monitored without requiring an additional external CT. This simplifies installation while providing accurate measurement for energy management, power monitoring and protection systems.
The calibrated Class 0.5 current transformer delivers excellent measurement accuracy, making the unit suitable for industrial facilities, commercial buildings, utility distribution equipment and applications where precise current monitoring is required alongside dependable circuit isolation.
Typical Applications
- Industrial switchboards.
- Power distribution panels.
- Energy monitoring installations.
- Metering and power management systems.
- Utility distribution equipment.
- Motor control centres.
- Commercial electrical installations.
- OEM switchgear assemblies.
Technical Specifications
Tick the specs you need, then view products that match.
| Mounting Type | Busbar system 185 mm | |
|---|---|---|
| Current | 250 A | |
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | Fuse switch disconnector | |
| Voltage | 690 V | |
| Item number | L1023165 | |
| Catalogue No | 1.100.062 | |
| Description | NH fuse-switch disconnector MULTIVERT® Size 1 250A 3x1-Pole switching Bus bar system 185mm Screw M10 ct1P c. | |
| EAN/UPC Code | 9008567008225 | |
| 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 | 3x1-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® 1.100.000 with integrated C.T. 250/5A, 3,75 VA, class 0,5; calibrated, 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 | 4.6 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 | 4.6 kg | |
| Conventional Free Air thermal Current - Solid Links | 400 A |
Frequently Asked Questions
What is the Mersen L1023165 used for?
The Mersen L1023165 is used for switching, isolating and protecting low-voltage electrical circuits while providing integrated current measurement through its built-in current transformer.
What is the current rating?
The unit has a rated operational current of 250 A.
What current transformer is included?
The switch disconnector includes a factory-installed, calibrated 250/5 A Class 0.5 current transformer with a 3.75 VA burden for single-pole measurement.
Which fuse size is compatible?
The L1023165 is designed for NH Size 1 fuse links manufactured to IEC/EN 60269-2.
What busbar system is required?
The unit is designed for installation on a standard 185 mm busbar system.
Trusted by Electrical Engineers Worldwide
Mersen MULTIVERT® fuse switch disconnectors are widely used throughout industrial, commercial and utility installations, delivering dependable circuit protection, safe isolation and integrated current monitoring for modern power distribution systems.
