MERSEN FUSE MB1 250A 3P+N 1.002.378 1.002.378

Why Choose the NH Fuse-Switch Disconnector MULTIBLOC® Size 1 250A 3-Pole+N?

Engineered for reliable and safe power distribution, the NH fuse-switch disconnector MULTIBLOC® Size 1 offers robust 3-pole plus neutral switching for demanding industrial environments. Rated at 250A, this unit ensures optimum protection and isolation in low-voltage electrical installations.

Featuring bottom fitting and panel mounting with durable M10 screw connections, it provides quick, secure, and maintenance-friendly assembly. Choose this solution to enhance system integrity, operational safety, and service continuity in critical power applications.

Technical Specifications

• Item number: V1002128
• Catalogue No: 1.002.378
• Description: NH fuse-switch disconnector MULTIBLOC® Size 1 250A 3-Pole+N switching Bottom Fitting/panel Connection Screw M10
• EAN/UPC Code: 9008567000816
• 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 22 B @ Ue = AC 500 V; Ie = 250 A AC 21 B @ Ue = AC 690 V; Ie = 200 A
• Switchability: 4-pole switching
• AC or DC: AC
• Short Circuit Current Rating (SCCR): 80kA@Ue=AC 400 V;Ie=250 A / 80kA@Ue=AC 500 V;Ie=250 A / 80kA (1-,2-pole)@Ue=AC 690 V;Ie=200 A / 50kA (3-,4-pole)@Ue=AC 690 V;Ie=200 A
• Fuse Size: 1
• Design Details: with ready fitted speacial solid link as neutral conductor in pole 4 for leading and lagging switching
• Number of Poles: 3-Pole+N
• 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: 13 W
• Power Dissipation by Ith without Solid Links: 33 W
• Rated short circuit making capacity with solid links Icm: 8.2 kA
• Installation Mounting: Bottom Fitting/panel
• Product Width: 256 mm
• Product Length: 110.5 mm
• Product Height: 246 mm
• Sell Pack Quantity: 1 EA
• Sell Pack Weight: 3.55 kg
• Sell Pack Width: 250 mm
• Sell Pack Length: 260 mm
• Sell Pack Height: 125 mm
• Product group: IEC Fuse Switch Disconnectors
• Conventional Free Air thermal Current With Fuse-Links Ith: 250 A
• Product Weight: 3.55 kg
• Conventional Free Air thermal Current - Solid Links: 400 A

Product Code: V1002128

Key Benefits

• Reliable 3-pole plus neutral switching for enhanced safety and control
• High ampere rating of 250A suitable for demanding industrial applications
• Robust bottom fitting and panel mounting with secure M10 screw connections
• Designed for easy installation and maintenance to reduce downtime
• High short circuit current rating (80kA) ensures strong protection
• Ready fitted special solid link neutral conductor for leading and lagging switching

Compatibility

This NH fuse-switch disconnector is compatible with IEC standard fuse links size 1 and designed for use in low-voltage electrical distribution systems up to 690 V AC. It is suitable for integration with industrial control panels and switchgear assemblies requiring 3-pole plus neutral switching.

Applications

• Industrial power distribution and control panels
• Low-voltage switchgear and motor control centres
• Electrical isolation and protection in manufacturing plants
• Renewable energy installations requiring safe disconnection
• Maintenance and service continuity in critical power systems

Common Search Terms

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