MERSEN FUSE MB1 250A 4P 1.000.405 1.000.405

Engineered for reliable performance in challenging industrial environments, this NH fuse-switch disconnector supports up to 250A with a robust 4-pole switching design, bottom fitting, and panel connection with M10 screw terminals.

SKU: Y1023061Alt SKU: 1.000.405MPN: Y1023061

List Price £301.22 ex VAT

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£301.22

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Why Choose the NH Fuse-Switch Disconnector MULTIBLOC® Size 1 250A 4-Pole?

Engineered for reliable performance in challenging industrial environments, the NH fuse-switch disconnector MULTIBLOC® Size 1 supports up to 250A and features a robust 4-pole switching design for enhanced safety and operational flexibility. Bottom fitting and panel connection with M10 screw terminals provide secure, vibration-resistant installation, ensuring consistent connectivity in demanding applications.

Its compact construction and high-quality materials guarantee long service life and minimal maintenance, making it ideal for energy distribution panels and switchgear assemblies where dependable protection and quick isolation are essential.

Product Code: Y1023061

Key Benefits

Reliable 4-pole switching for enhanced safety and operational flexibility
Supports up to 250A with high short circuit current rating for robust protection
Bottom fitting with M10 screw terminals ensures secure and vibration-resistant installation
Compact design suitable for energy distribution panels and switchgear assemblies
Low maintenance with durable construction for long service life

Compatibility

This NH fuse-switch disconnector is compatible with IEC fuse size 1 and designed for use in panels and switchgear assemblies requiring 4-pole switching and bottom fitting connections. It supports AC systems with rated voltages up to 690 V and is suitable for integration with standard industrial electrical components adhering to IEC standards.

Applications

Industrial energy distribution panels
Switchgear assemblies and control panels
Protection and isolation in electrical installations
Manufacturing and processing plants
Commercial and infrastructure electrical systems

Technical Specifications

Current	250 A
Phase	Three Phase
Item number	Y1023061
Catalogue No	1.000.405
Description	NH fuse-switch disconnector MULTIBLOC® Size 1 250A 4-Pole switching Bottom Fitting/panel Connection Screw M10
EAN/UPC Code	4027597026813
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
Number of Poles	4-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	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	3.4 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	3.4 kg
Conventional Free Air thermal Current - Solid Links	400 A
HS Code	85365080
Country of Manufacture	Hungary
Poles	4-pole
Device Type	Fuse switch disconnector
Voltage	690 V

Frequently Asked Questions

What is the maximum current rating of this fuse-switch disconnector?

The maximum ampere rating is 250 A, suitable for demanding industrial applications.

Can this product be used in DC applications?

No, this fuse-switch disconnector is designed for AC applications only.

What type of mounting does this product support?

It supports bottom fitting and panel mounting with M10 screw terminals for secure installation.

What is the short circuit current rating (SCCR) of this device?

The SCCR is 80kA at AC 400 V and AC 500 V for 1- and 2-pole, and 50kA at AC 690 V for 3- and 4-pole configurations.

Common Search Terms

NH fuse-switch disconnector, MULTIBLOC Size 1, 250A fuse switch, 4-pole disconnector, IEC fuse switch, bottom fitting fuse switch, panel connection fuse switch, industrial fuse disconnector, M10 screw terminal fuse switch

Current	250 A
Phase	Three Phase
Item number	Y1023061
Catalogue No	1.000.405
Description	NH fuse-switch disconnector MULTIBLOC® Size 1 250A 4-Pole switching Bottom Fitting/panel Connection Screw M10
EAN/UPC Code	4027597026813
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
Number of Poles	4-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	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	3.4 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	3.4 kg
Conventional Free Air thermal Current - Solid Links	400 A
HS Code	85365080
Country of Manufacture	Hungary
Poles	4-pole
Device Type	Fuse switch disconnector
Voltage	690 V

UK delivery

Delivery options

Free UK delivery on orders over £200 ex VAT. Order in-stock items before 2pm Monday to Friday for next-day delivery.

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