MERSEN FUSE MB1 250A 1P 1.000.397 1.000.397

Why Choose the NH Fuse-Switch Disconnector MULTIBLOC® Size 1 250A 2-Pole?

Engineered for reliable and safe circuit protection, the NH Fuse-Switch Disconnector MULTIBLOC® Size 1 250A 2-Pole is ideal for demanding industrial environments. With a robust bottom fitting and secure panel connection via M10 screw terminals, it ensures efficient installation and maintenance.

This unit delivers precise switching and disconnection up to 250A, supporting two-pole configurations for enhanced operational flexibility. Designed to meet stringent safety standards, it provides long-term durability and superior operational dependability for your electrical infrastructure.

Technical Specifications

• Item number: R229877
• Catalogue No: 1.000.397
• Description: NH fuse-switch disconnector MULTIBLOC® Size 1 250A 2-Pole switching Bottom Fitting/panel Connection Screw M10
• EAN/UPC Code: 4027597026783
• 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 DC 22 B @ Ue = DC 220 V; Ie = 250 A
• Switchability: 2-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
• Number of Poles: 2-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: 9 W
• Power Dissipation by Ith without Solid Links: 23 W
• Rated short circuit making capacity with solid links Icm: 8.2 kA
• Installation Mounting: Bottom Fitting/panel
• Product Width: 142 mm
• Product Length: 110.5 mm
• Product Height: 246 mm
• Sell Pack Quantity: 1 EA
• Sell Pack Weight: 2.06 kg
• Sell Pack Width: 195 mm
• Sell Pack Length: 265 mm
• Sell Pack Height: 115 mm
• Product group: IEC Fuse Switch Disconnectors
• Conventional Free Air thermal Current With Fuse-Links Ith: 250 A
• Product Weight: 2.06 kg
• Conventional Free Air thermal Current - Solid Links: 400 A

Product Code: R229877

Key Benefits

• Reliable circuit protection up to 250A for industrial applications
• Robust bottom fitting with secure M10 screw terminal panel connection
• Supports 2-pole switching for enhanced operational flexibility
• High short circuit current rating ensuring safety under fault conditions
• Designed for long-term durability and compliance with safety standards

Compatibility

This fuse-switch disconnector is compatible with NH size 1 fuse links and designed for integration into IEC Fuse Switch Disconnector panels. It supports AC systems up to 690 V and is suitable for use with both fuse and solid links as specified.

Applications

• Industrial electrical distribution systems
• Motor protection and control circuits
• Power distribution panels requiring reliable switching and disconnection
• Maintenance and safety isolation in electrical installations

Common Search Terms

NH fuse-switch disconnector, MULTIBLOC size 1, 250A fuse switch, 2-pole disconnector, IEC fuse switch, industrial fuse switch, panel mounted fuse switch, M10 screw terminal fuse switch