MERSEN FUSE MB1 250A 3P+N 1.002.378 1.002.378

NH fuse-switch disconnector MULTIBLOC® Size 1 250A 3-Pole+N switching Bottom Fitting/panel Connection Screw M10 designed for reliable and safe power distribution in industrial environments.

SKU: V1002128Alt SKU: 1.002.378MPN: V1002128

List Price £377.35 ex VAT

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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.

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

Technical Specifications

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Mounting Type	Base / panel
Current	250 A
Phase	Three Phase
Poles	3-pole + N
Device Type	Fuse switch disconnector
Voltage	690 V
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
HS Code	85365080
Country of Manufacture	Hungary

Frequently Asked Questions

What is the maximum voltage rating for this fuse-switch disconnector?

The device is rated for up to 690 V AC according to IEC standards.

Can this product be used for DC applications?

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

What type of mounting does the product support?

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

What is the short circuit current rating (SCCR)?

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

Common Search Terms

NH fuse-switch disconnector, MULTIBLOC Size 1, 250A fuse switch, 3-pole plus neutral switch, IEC fuse switch disconnector, industrial fuse switch, panel mounting fuse switch, bottom fitting fuse switch, electrical isolation switch, low-voltage fuse switch

Mounting Type	Base / panel
Current	250 A
Phase	Three Phase
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
HS Code	85365080
Country of Manufacture	Hungary
Poles	3-pole + N
Device Type	Fuse switch disconnector
Voltage	690 V

UK delivery

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