MERSEN FUSE MB1 250A 3P 1.001.239 1.001.239

The MULTIBLOC® NH fuse-switch disconnector offers robust and reliable 250A 3-pole switching for demanding industrial energy distribution with bottom fitting and M10 screw clamp straps.

SKU: V1023058Alt SKU: 1.001.239MPN: V1023058

List Price £236.41 ex VAT

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

The MULTIBLOC® NH fuse-switch disconnector offers robust and reliable 250A 3-pole switching for demanding industrial energy distribution. Engineered for efficiency, it supports secure bottom panel fitting and ensures rapid, safe operation in critical applications.

Equipped with M10 screw clamp straps for consistent electrical contact, this device streamlines installation while maintaining optimum performance and safety. Ideal for use in main and sub-distribution boards, it delivers durability and ease of maintenance in modern power systems.

Product Code: V1023058

Key Benefits

Reliable 250A 3-pole switching for industrial applications
Secure bottom fitting/panel mounting for easy installation
M10 screw clamp straps ensure consistent and safe electrical contact
High short circuit current rating up to 80kA for enhanced safety
Durable design suitable for main and sub-distribution boards
Supports a wide frequency range of 50 to 60 Hz

Compatibility

This NH fuse-switch disconnector is compatible with Size 1 NH fuse links and designed to integrate seamlessly into IEC Fuse Switch Disconnector systems. It supports AC voltages up to 690 V and is suitable for use with solid links and fuse links matching the specified ratings.

Applications

Main and sub-distribution boards in industrial electrical systems
Power distribution and switching in commercial and industrial facilities
Protection and isolation of electrical circuits in energy distribution
Use in systems requiring reliable and safe switching of 3-pole circuits

Technical Specifications

Tick the specs you need, then view products that match.

Mounting Type	Base / panel
Current	250 A
Phase	Three Phase
Poles	3-pole
Device Type	Fuse switch disconnector
Voltage	690 V
Item number	V1023058
Catalogue No	1.001.239
Description	NH fuse-switch disconnector MULTIBLOC® Size 1 250A 3-Pole switching Bottom Fitting/panel Connection Clamp Strap / Screw clamp straps M10
EAN/UPC Code	4027597029654
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 21 B @ Ue = DC 440 V; Ie = 250 A
Switchability	3-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	Clamp Strap / Screw
Number of Poles	3-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	185 mm
Product Length	110.5 mm
Product Height	246 mm
Sell Pack Quantity	1 EA
Sell Pack Weight	2.42 kg
Sell Pack Width	187 mm
Sell Pack Length	248 mm
Sell Pack Height	112 mm
Product group	IEC Fuse Switch Disconnectors
Conventional Free Air thermal Current With Fuse-Links Ith	250 A
Product Weight	2.42 kg
Conventional Free Air thermal Current - Solid Links	400 A
HS Code	85365080
Country of Manufacture	Hungary

Frequently Asked Questions

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

The maximum rated voltage AC IEC for this device is 690 V.

Can this fuse-switch disconnector be used for DC applications?

This model is specified for AC use; however, the utilization category includes DC 21 B @ Ue = DC 440 V with Ie = 250 A, indicating some DC compatibility.

What type of mounting does this product support?

It supports bottom fitting or panel mounting for secure installation.

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

The SCCR is up to 80kA at various voltages, including AC 400 V and AC 500 V for 250 A.

How many poles does this fuse-switch disconnector have?

This product features 3-pole switching capability.

Common Search Terms

NH fuse switch disconnector, MULTIBLOC size 1, 250A fuse switch, 3-pole fuse switch, bottom fitting fuse switch, screw clamp strap M10, IEC fuse switch disconnector, industrial fuse switch, high current fuse switch

Mounting Type	Base / panel
Current	250 A
Phase	Three Phase
Item number	V1023058
Catalogue No	1.001.239
Description	NH fuse-switch disconnector MULTIBLOC® Size 1 250A 3-Pole switching Bottom Fitting/panel Connection Clamp Strap / Screw clamp straps M10
EAN/UPC Code	4027597029654
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 21 B @ Ue = DC 440 V; Ie = 250 A
Switchability	3-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	Clamp Strap / Screw
Number of Poles	3-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	185 mm
Product Length	110.5 mm
Product Height	246 mm
Sell Pack Quantity	1 EA
Sell Pack Weight	2.42 kg
Sell Pack Width	187 mm
Sell Pack Length	248 mm
Sell Pack Height	112 mm
Product group	IEC Fuse Switch Disconnectors
Conventional Free Air thermal Current With Fuse-Links Ith	250 A
Product Weight	2.42 kg
Conventional Free Air thermal Current - Solid Links	400 A
HS Code	85365080
Country of Manufacture	Hungary
Poles	3-pole
Device Type	Fuse switch disconnector
Voltage	690 V

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