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MERSEN FUSE MB1 250A 3P 1.000.855 1.000.855
Reliable and versatile NH fuse-switch disconnector with 250A rating, 3-pole switching, and compatibility with 40mm and 60mm bus bar systems. Features electromechanic fuse monitoring and M10 screw connections.
£549.32
Why Choose the NH Fuse-Switch Disconnector MULTIBLOC® Size 1 250A 3-Pole?
Engineered for reliability and versatility, the NH fuse-switch disconnector MULTIBLOC® Size 1 250A 3-Pole provides safe switch-off and isolation in demanding industrial and commercial distribution systems. Its robust design, featuring a 250A rating and compatibility with 40mm bus bar systems, ensures optimal performance in high-load applications.
Equipped with secure M10 screw connections for straightforward installation and lasting electrical contact, this device offers enhanced operator safety and minimal maintenance. Ideal for panel builders and OEMs seeking cost-effective, standard-compliant switching solutions.
Product Code: M1023051
Key Benefits
- Reliable disconnection and isolation with 3-pole switching for enhanced safety.
- High ampere rating of 250A suitable for demanding industrial applications.
- Compatible with 40mm and 60mm bus bar systems for installation flexibility.
- Robust M10 screw connections ensure secure and durable electrical contact.
- Electromechanic fuse monitoring (MZS) with galvanic isolation for improved operational safety.
- Compact dimensions facilitate integration into various panel designs.
Compatibility
This fuse-switch disconnector is compatible with NH fuse links size 1 and designed for use in IEC standard fuse switch disconnectors. It supports AC and DC applications up to 690 V AC and 440 V DC, making it suitable for a wide range of industrial electrical distribution systems.
Applications
- Industrial power distribution panels.
- Commercial electrical switchgear assemblies.
- OEM equipment requiring reliable fuse-switch disconnection.
- Electrical isolation in maintenance and safety procedures.
- Systems requiring high short circuit current ratings and thermal current capacities.
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 | M1023051 | |
| Catalogue No | 1.000.855 | |
| Description | NH fuse-switch disconnector MULTIBLOC® Size 1 250A 3-Pole switching Bus bar system 40mm Connection Screw M10 elecmec mon. | |
| EAN/UPC Code | 9008567002131 | |
| 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 | |
| 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 electromechanic fuse monitoring MZS installed (galvanic isolation) | |
| 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 | 186.5 mm | |
| Product Height | 246 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 3.8 kg | |
| Sell Pack Width | 208 mm | |
| Sell Pack Length | 262 mm | |
| Sell Pack Height | 185 mm | |
| Product group | IEC Fuse Switch Disconnectors | |
| Conventional Free Air thermal Current With Fuse-Links Ith | 250 A | |
| Product Weight | 3.8 kg | |
| Conventional Free Air thermal Current - Solid Links | 400 A | |
| HS Code | 85365080 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the maximum rated voltage for this fuse-switch disconnector?
The maximum rated voltage is 690 V AC and 440 V DC according to IEC standards.
Can this product be used in both AC and DC circuits?
Yes, it is designed for use in both AC and DC applications.
What type of fuse size does this disconnector accommodate?
This device is compatible with NH fuse links size 1.
Is the product suitable for high short circuit current ratings?
Yes, it has a short circuit current rating (SCCR) of up to 80kA at 400 V and 500 V AC.
What kind of mounting system does this product support?
It supports bus bar systems of 40 mm and 60 mm for installation.
Common Search Terms
NH fuse-switch disconnector, MULTIBLOC® Size 1, 250A fuse switch, 3-pole disconnector, bus bar system 40mm, electromechanic fuse monitoring, IEC fuse switch disconnectors, industrial fuse switch, M10 screw connection fuse switch, high current fuse disconnector.
