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MERSEN FUSE MB1 250A 3P 1.003.134 1.003.134
3-pole NH fuse-switch disconnector supporting up to 250A with electronic fuse monitoring and compatibility with 40mm and 60mm bus bar systems.
£522.87
Why Choose the NH Fuse-Switch Disconnector MULTIBLOC® Size 1 250A 3-Pole?
Optimised for modern low-voltage distribution, this 3-pole NH fuse-switch disconnector supports up to 250A and integrates seamlessly within 40mm bus bar systems. Its robust M10 screw terminals ensure secure electrical connections for demanding industrial environments.
Engineered for reliability and safety, the MULTIBLOC® system enables fast, safe fuse-switching with clear electrical monitoring. This unit is ideal for applications requiring precise protection and rapid maintenance in commercial and industrial installations.
Product Code: R1023055
Key Benefits
- High current rating of 250A suitable for demanding industrial applications.
- 3-pole switching ensures comprehensive circuit isolation and protection.
- Compatible with 40mm and 60mm bus bar systems for flexible installation.
- Electronic fuse monitoring (ESÜ) installed for enhanced safety and status indication.
- Robust M10 screw connections provide secure and reliable electrical contact.
- Designed to meet IEC standards with high short circuit current rating (up to 80kA).
- Compact dimensions for space-efficient panel integration.
Compatibility
This fuse-switch disconnector is compatible with NH fuse size 1 and designed for use with both AC and DC systems up to 690 V AC and 440 V DC. It integrates with 40mm and 60mm bus bar systems and supports solid links and fuse links, providing versatility for various electrical distribution setups.
Applications
- Industrial low-voltage power distribution panels.
- Commercial electrical installations requiring reliable circuit protection.
- Control and distribution boards in manufacturing plants.
- Maintenance and safety switching in electrical networks.
- Renewable energy systems with DC and AC protection needs.
Technical Specifications
Tick the specs you need, then view products that match.
| Mounting Type | Busbar system 40 mm | |
|---|---|---|
| Current | 250 A | |
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | Fuse switch disconnector | |
| Voltage | 690 V | |
| Item number | R1023055 | |
| Catalogue No | 1.003.134 | |
| Description | NH fuse-switch disconnector MULTIBLOC® Size 1 250A 3-Pole switching Bus bar system 40mm Connection Screw M10 elec mon. | |
| EAN/UPC Code | 9008567006382 | |
| Frequency (Hz) | 50 ... 60 Hz | |
| Rated voltage AC IEC | 690 V | |
| Rated voltage DC IEC | 440 V | |
| Ampere Rating | 250 A | |
| Utilization Category | AC 23 B @ Ue = AC 400 V; Ie = 250 A AC 22 B @ Ue = AC 500 V; Ie = 250 A AC 21 B @ Ue = AC 690 V; Ie = 200 A DC 21 B @ Ue = DC 440 V; Ie = 250 A | |
| Switchability | 3-pole switching | |
| RoHS Compliant | Yes | |
| AC or DC | AC/DC | |
| Short Circuit Current Rating (SCCR) | 80kA@Ue = AC 400 V; Ie = 250 A / 80kA@Ue = AC 500 V; Ie = 250 A / 50kA (3-,4-pole)@Ue = AC 690 V; Ie = 200 A | |
| Fuse Size | 1 | |
| Design Details | with electronic fuse monitoring ESÜ installed (rated voltage = 525VAC) | |
| 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 | 20 W | |
| Rated short circuit making capacity with solid links Icm | 8.2 kA | |
| Installation Mounting | Bus bar system 40 mm and 60 mm | |
| Product Width | 185 mm | |
| Product Length | 129 mm | |
| Product Height | 246 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 3.14 kg | |
| Sell Pack Width | 187 mm | |
| Sell Pack Length | 248 mm | |
| Sell Pack Height | 165 mm | |
| Product group | IEC Fuse Switch Disconnectors | |
| Conventional Free Air thermal Current With Fuse-Links Ith | 250 A | |
| Product Weight | 3.14 kg | |
| Conventional Free Air thermal Current - Solid Links | 400 A | |
| HS Code | 85365080 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the maximum current rating of this fuse-switch disconnector?
The device supports a maximum current rating of 250A, suitable for industrial low-voltage applications.
Is this product compatible with both AC and DC systems?
Yes, it is designed for use in AC systems up to 690 V and DC systems up to 440 V.
What type of fuse size does this disconnector support?
This unit supports NH fuse size 1, enabling standardised protection options.
Can this fuse-switch disconnector be mounted on different bus bar sizes?
Yes, it is compatible with bus bar systems of 40mm and 60mm widths for flexible installation.
Does the product include any electronic monitoring features?
It includes electronic fuse monitoring (ESÜ) installed, providing enhanced safety and status indication.
Common Search Terms
NH fuse switch disconnector, MULTIBLOC fuse switch, 250A fuse holder, 3-pole fuse switch, bus bar fuse switch 40mm, electronic fuse monitoring, industrial fuse switch, IEC fuse switch disconnector, low voltage fuse switch, screw terminal fuse switch
