MERSEN FUSE MB1 250A 3P 1.002.562 1.002.562

High-capacity NH fuse-switch disconnector with 3-pole switching, 250A rating, bottom fitting for panel mounting and clamp strap connection.

SKU: W1023059Alt SKU: 1.002.562MPN: W1023059

List Price £305.20 ex VAT

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

Engineered for reliable power distribution, the MULTIBLOC® Size 1 250A 3-pole fuse-switch disconnector provides secure, high-capacity circuit protection and isolation for industrial installations. Its robust bottom fitting and clamp strap connection ensure optimal conductivity and safe panel mounting.

This unit is designed for efficient installation while supporting fast, safe fuse changes and maintenance. Suitable for demanding three-phase applications, it maximises uptime and safety in harsh or high-load environments.

Product Code: W1023059

Key Benefits

High current rating of 250A suitable for demanding industrial applications.
Robust bottom fitting and clamp strap design for secure and reliable panel mounting.
Supports fast and safe fuse replacement to reduce downtime.
Designed for three-pole switching ensuring effective isolation in three-phase systems.
High short circuit current rating (up to 80kA) for enhanced safety and protection.
Compact dimensions facilitating integration into existing switchgear assemblies.

Compatibility

This fuse-switch disconnector is compatible with NH Size 1 fuse links and solid links designed for IEC Fuse Switch Disconnectors. It is suitable for use in industrial power distribution panels requiring 3-pole switching at voltages up to 690 V AC and frequencies of 50 to 60 Hz.

Applications

Industrial power distribution and control panels.
Protection and isolation in three-phase electrical installations.
Switchgear assemblies requiring reliable fuse-switch disconnectors.
Heavy machinery and motor protection circuits.
Renewable energy systems with high current demands.

Technical Specifications

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Mounting Type	Base / panel
Current	250 A
Phase	Three Phase
Poles	3-pole
Device Type	Fuse switch disconnector
Voltage	690 V
Item number	W1023059
Catalogue No	1.002.562
Description	NH fuse-switch disconnector MULTIBLOC® Size 1 250A 3-Pole switching Bottom Fitting/panel Connection Clamp Strap clamp straps
EAN/UPC Code	9008567001639
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
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 type of fuse links are compatible with this fuse-switch disconnector?

The NH Fuse-Switch Disconnector MULTIBLOC® Size 1 is compatible with NH Size 1 fuse links and solid links designed for IEC Fuse Switch Disconnectors.

Can this disconnector be used in DC applications?

This particular model is designed primarily for AC applications as indicated by its AC rating and utilisation category. For DC applications, please consult product specifications or contact the supplier.

What is the maximum short circuit current rating?

The device has a short circuit current rating (SCCR) of up to 80kA at 400 V and 500 V AC, and 50kA at 690 V AC for 3-pole switching.

How is the device mounted?

The fuse-switch disconnector is mounted using a bottom fitting designed for panel installation, ensuring secure and stable mounting.

Common Search Terms

NH fuse switch disconnector, MULTIBLOC fuse holder, 250A fuse switch, 3-pole fuse switch, industrial fuse switch, IEC fuse switch disconnector, panel mount fuse switch, high current fuse switch, bottom fitting fuse switch, clamp strap fuse holder

Mounting Type	Base / panel
Current	250 A
Phase	Three Phase
Item number	W1023059
Catalogue No	1.002.562
Description	NH fuse-switch disconnector MULTIBLOC® Size 1 250A 3-Pole switching Bottom Fitting/panel Connection Clamp Strap clamp straps
EAN/UPC Code	9008567001639
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
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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