MERSEN FUSE MB2 400A 4P 1.001.688 1.001.688

The NH fuse-switch disconnector MULTIBLOC® Size 2 is engineered for reliable and efficient power distribution in demanding industrial environments. Rated at 400A with a robust 4-pole configuration, it is ideal for secure circuit isolation and overload protection within low-voltage applications.

SKU: J1023071Alt SKU: 1.001.688MPN: J1023071

List Price £971.00 ex VAT

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£971.00

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Why Choose the NH Fuse-Switch Disconnector MULTIBLOC® Size 2 400A 4-Pole?

This bottom-fitting, panel-mounted solution features a screw M10 terminal connection, ensuring durable and vibration-resistant wiring. Designed for ease of installation and long-term service, it supports safe, high-current switching and is compliant with stringent European standards.

Product Code: J1023071

Key Benefits

Reliable circuit isolation and overload protection rated at 400A
Robust 4-pole switching for enhanced safety and control
Durable screw M10 terminal connections for secure wiring
Bottom fitting/panel mounting for flexible installation
Compliance with European safety and performance standards
High short circuit current rating ensuring operational safety

Compatibility

This fuse-switch disconnector is compatible with NH fuse links Size 2 and designed to integrate seamlessly within IEC Fuse Switch Disconnector product groups. It supports AC systems up to 690 V and is suitable for use in industrial low-voltage distribution panels requiring 4-pole switching.

Applications

Industrial power distribution and control panels
Low-voltage electrical installations requiring reliable disconnection
Overload and short-circuit protection in manufacturing plants
Panel-mounted electrical switchgear assemblies
Power distribution in commercial and infrastructure projects

Technical Specifications

Current	400 A
Phase	Three Phase
Item number	J1023071
Catalogue No	1.001.688
Description	NH fuse-switch disconnector MULTIBLOC® Size 2 400A 4-Pole switching Bottom Fitting/panel Connection Screw M10
EAN/UPC Code	9008567002322
Frequency (Hz)	50 ... 60 Hz
Rated voltage AC IEC	690 V
Ampere Rating	400 A
Utilization Category	AC 23 B @ Ue = AC 400 V; Ie = 400 A AC 22 B @ Ue = AC 500 V; Ie = 400 A AC 21 B @ Ue = AC 690 V; Ie = 315 A
Switchability	4-pole switching
RoHS Compliant	Yes
AC or DC	AC
Short Circuit Current Rating (SCCR)	80kA@Ue = AC 400 V; Ie = 400 A / 80kA@Ue = AC 500 V; Ie = 400 A / 80kA (3-pole)@Ue = AC 690 V; Ie = 315 A / 50kA (4-pole)@Ue = AC 690 V; Ie = 315 A
Fuse Size	2
Number of Poles	4-Pole
Degree of Pollution	3
Rated Impulse Withstand Voltage	12 kV
Rated Insulation Voltage	1000 V
Rated SC Withstand	13 kA / 1 s
Max Power dissipation of Fuse Links Pn	34 W
Max Power dissipation of Solid Links Pn	9 W
Power Dissipation by Ith without Fuse-Links	27 W
Power Dissipation by Ith without Solid Links	67 W
Rated short circuit making capacity with solid links Icm	10.6 kA
Installation Mounting	Bottom Fitting/panel
Product Width	274 mm
Product Length	138.5 mm
Product Height	259 mm
Sell Pack Quantity	1 EA
Sell Pack Weight	5.04 kg
Sell Pack Width	270 mm
Sell Pack Length	280 mm
Sell Pack Height	150 mm
Product group	IEC Fuse Switch Disconnectors
Conventional Free Air thermal Current With Fuse-Links Ith	400 A
Product Weight	5.04 kg
Conventional Free Air thermal Current - Solid Links	630 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 rated voltage for this fuse-switch disconnector?

The rated voltage AC IEC for this product is 690 V.

How many poles does this fuse-switch disconnector have?

It features a 4-pole switching configuration.

Is this product RoHS compliant?

Yes, it is RoHS compliant.

What type of mounting does this product support?

This fuse-switch disconnector supports bottom fitting/panel mounting.

What is the short circuit current rating (SCCR)?

The SCCR is 80kA at AC 400 V and AC 500 V for 400 A, and 80kA (3-pole) / 50kA (4-pole) at AC 690 V for 315 A.

Common Search Terms

NH fuse-switch disconnector, MULTIBLOC® Size 2, 400A fuse switch, 4-pole fuse switch, bottom fitting fuse switch, panel mounted fuse switch, screw M10 terminal fuse switch, IEC fuse switch disconnector, industrial fuse switch, low voltage fuse switch

Current	400 A
Phase	Three Phase
Item number	J1023071
Catalogue No	1.001.688
Description	NH fuse-switch disconnector MULTIBLOC® Size 2 400A 4-Pole switching Bottom Fitting/panel Connection Screw M10
EAN/UPC Code	9008567002322
Frequency (Hz)	50 ... 60 Hz
Rated voltage AC IEC	690 V
Ampere Rating	400 A
Utilization Category	AC 23 B @ Ue = AC 400 V; Ie = 400 A AC 22 B @ Ue = AC 500 V; Ie = 400 A AC 21 B @ Ue = AC 690 V; Ie = 315 A
Switchability	4-pole switching
RoHS Compliant	Yes
AC or DC	AC
Short Circuit Current Rating (SCCR)	80kA@Ue = AC 400 V; Ie = 400 A / 80kA@Ue = AC 500 V; Ie = 400 A / 80kA (3-pole)@Ue = AC 690 V; Ie = 315 A / 50kA (4-pole)@Ue = AC 690 V; Ie = 315 A
Fuse Size	2
Number of Poles	4-Pole
Degree of Pollution	3
Rated Impulse Withstand Voltage	12 kV
Rated Insulation Voltage	1000 V
Rated SC Withstand	13 kA / 1 s
Max Power dissipation of Fuse Links Pn	34 W
Max Power dissipation of Solid Links Pn	9 W
Power Dissipation by Ith without Fuse-Links	27 W
Power Dissipation by Ith without Solid Links	67 W
Rated short circuit making capacity with solid links Icm	10.6 kA
Installation Mounting	Bottom Fitting/panel
Product Width	274 mm
Product Length	138.5 mm
Product Height	259 mm
Sell Pack Quantity	1 EA
Sell Pack Weight	5.04 kg
Sell Pack Width	270 mm
Sell Pack Length	280 mm
Sell Pack Height	150 mm
Product group	IEC Fuse Switch Disconnectors
Conventional Free Air thermal Current With Fuse-Links Ith	400 A
Product Weight	5.04 kg
Conventional Free Air thermal Current - Solid Links	630 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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Please contact us for a delivery time before you order

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£8 ex VAT · free over £200

UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.

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