MERSEN FUSE MB4a 1250A 3P 1.000.089 1.000.089

Why Choose the NH Fuse-Switch Disconnector MULTIBLOC® Size 4a 1250A 3x1-Pole?

The MULTIBLOC® Size 4a NH fuse-switch disconnector offers robust and reliable protection for high-power distribution systems, supporting up to 1250A across three single poles. Its bottom fitting/panel connection with M16 screw terminals ensures secure and straightforward installation in demanding industrial environments.

Designed for maximum safety and operational efficiency, this unit is ideal for integration into LV panel assemblies and switchgear, providing safe load isolation and easy fuse replacement in accordance with stringent British and European standards.

Technical Specifications

• Item number: V1023081
• Catalogue No: 1.000.089
• Description: NH fuse-switch disconnector MULTIBLOC® Size 4a 1250A 3x1-Pole switching Bottom Fitting/panel Connection Screw M16
• EAN/UPC Code: 4027597028749
• Frequency (Hz): 50 ... 60 Hz
• Rated voltage AC IEC: 400 V
• Ampere Rating: 1250 A
• Utilization Category: AC 22 B @ Ue = AC 400 V; Ie = 1250 A DC 20 B @ Ue = DC 1000 V; Ie = 1250 A (with solid links)
• Switchability: 3x1-pole switching
• RoHS Compliant: Yes
• AC or DC: AC
• Fuse Size: 4a
• Design Details: single pole switching
• Number of Poles: 3-Pole
• Degree of Pollution: 3
• Rated Impulse Withstand Voltage: 8 kV
• Rated Insulation Voltage: 800 V
• Rated SC Withstand: 50 kA / 1 s
• Max Power dissipation of Fuse Links Pn: 115 W
• Max Power dissipation of Solid Links Pn: 42 W
• Power Dissipation by Ith without Fuse-Links: 180 W
• Power Dissipation by Ith without Solid Links: 180 W
• Rated short circuit making capacity with solid links Icm: 100 kA
• Installation Mounting: Bottom Fitting/panel
• Product Width: 378 mm
• Product Length: 233 mm
• Product Height: 330 mm
• Sell Pack Quantity: 1 EA
• Sell Pack Weight: 12.5 kg
• Sell Pack Width: 400 mm
• Sell Pack Length: 400 mm
• Sell Pack Height: 290 mm
• Product group: IEC Fuse Switch Disconnectors
• Conventional Free Air thermal Current With Fuse-Links Ith: 1250 A
• Product Weight: 12.5 kg
• Conventional Free Air thermal Current - Solid Links: 1500 A

Product Code: V1023081

Key Benefits

• High current rating of 1250A for demanding industrial applications.
• Reliable 3x1-pole switching design ensures safe load isolation.
• Bottom fitting/panel mounting with M16 screw terminals for secure installation.
• Compliant with British and European safety standards for fuse-switch disconnectors.
• Robust construction designed to withstand high short-circuit currents (up to 50 kA).
• Facilitates easy fuse replacement and maintenance, reducing downtime.

Compatibility

This fuse-switch disconnector is compatible with NH Size 4a fuse links and designed to integrate seamlessly into LV panel assemblies and switchgear systems operating at 400 V AC. It supports both AC and DC utilization categories when used with appropriate solid links, making it versatile for various industrial electrical installations.

Applications

• Low voltage power distribution panels.
• Industrial switchgear assemblies.
• Electrical load isolation in manufacturing plants.
• Protection of transformers and motors.
• Renewable energy systems requiring high current fuse protection.

Common Search Terms

NH fuse switch disconnector, MULTIBLOC 4a fuse holder, 1250A fuse switch, 3-pole fuse disconnector, bottom fitting panel fuse switch, industrial fuse switch, IEC fuse switch disconnector, high current fuse switch, M16 screw terminal fuse switch.