MERSEN FUSE MB2 400A 3P 1.003.135 1.003.135

Robust NH fuse-switch disconnector with 400A rating, 3-pole switching, compatible with 40mm bus bar systems and featuring electronic fuse monitoring.

SKU: D1023066Alt SKU: 1.003.135MPN: D1023066

List Price £938.37 ex VAT

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Why Choose the NH Fuse-Switch Disconnector MULTIBLOC® Size 2 400A 3-Pole?

This robust NH fuse-switch disconnector is engineered for reliable operation within bus bar systems, supporting a 400A rating across three poles. Its 40mm bus bar compatibility and screw M10 connections ensure secure, low-maintenance installation for demanding industrial and commercial applications.

With integrated electrical monitoring, the MULTIBLOC® 1.003.135 (SKU D1023066) enhances safety and operational efficiency, delivering consistent protection and performance for your power distribution needs.

Product Code: D1023066

Key Benefits

Reliable 400A rating for heavy-duty industrial and commercial use
3-pole switching for comprehensive circuit control
Compatible with 40mm bus bar systems for easy integration
Screw M10 connections ensure secure and stable installation
Integrated electronic fuse monitoring enhances safety and maintenance
High short circuit current rating (80kA) for robust protection
RoHS compliant, supporting environmental standards

Compatibility

This fuse-switch disconnector is compatible with IEC fuse switch disconnectors and designed specifically for bus bar systems with 40 mm mounting. It supports fuse size 2 and is suitable for use with solid links and fuse links within the specified current and voltage ratings.

Applications

Power distribution systems in industrial plants
Commercial electrical installations requiring secure disconnection
Bus bar systems needing integrated fuse monitoring
Electrical panels requiring reliable short circuit protection
Maintenance and safety upgrades in existing electrical infrastructure

Technical Specifications

Current	400 A
Phase	Three Phase
Item number	D1023066
Catalogue No	1.003.135
Description	NH fuse-switch disconnector MULTIBLOC® Size 2 400A 3-Pole switching Bus bar system 40mm Connection Screw M10 elec mon.
EAN/UPC Code	9008567006399
Frequency (Hz)	50 ... 60 Hz
Rated voltage AC IEC	690 V
Rated voltage DC IEC	440 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 DC 21 B @ Ue = DC 440 V; Ie = 400 A
Switchability	3-pole switching
RoHS Compliant	Yes
AC or DC	AC/DC
Short Circuit Current Rating (SCCR)	80kA@Ue = AC 400 V; Ie = 400 A / 80kA@Ue = AC 500 V; Ie = 400 A / 80kA@Ue = AC 690 V; Ie = 315 A
Fuse Size	2
Design Details	with electronic fuse monitoring ESÜ installed (rated voltage = 525VAC)
Number of Poles	3-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	60 W
Rated short circuit making capacity with solid links Icm	10.6 kA
Installation Mounting	Bus bar system 40 mm
Product Width	204.5 mm
Product Length	149 mm
Product Height	259 mm
Sell Pack Quantity	1 EA
Sell Pack Weight	4.6 kg
Sell Pack Width	208 mm
Sell Pack Length	262 mm
Sell Pack Height	185 mm
Product group	IEC Fuse Switch Disconnectors
Conventional Free Air thermal Current With Fuse-Links Ith	400 A
Product Weight	4.6 kg
Conventional Free Air thermal Current - Solid Links	530 A
HS Code	85365080
Country of Manufacture	Hungary
Poles	3-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 is 690 V AC IEC and 440 V DC IEC.

Is this product suitable for DC applications?

Yes, it supports both AC and DC applications as indicated by the AC/DC rating.

What type of connection does this device use?

It uses screw M10 connections compatible with a 40mm bus bar system.

Does this product include fuse monitoring?

Yes, it features electronic fuse monitoring (ESÜ) installed for enhanced safety.

What is the short circuit current rating?

The short circuit current rating is 80kA at various voltages depending on the utilisation category.

Common Search Terms

NH fuse switch disconnector, MULTIBLOC size 2, 400A fuse switch, 3-pole fuse switch, bus bar fuse switch, electronic fuse monitoring, IEC fuse switch, industrial fuse disconnector, screw M10 connection fuse switch.

Current	400 A
Phase	Three Phase
Item number	D1023066
Catalogue No	1.003.135
Description	NH fuse-switch disconnector MULTIBLOC® Size 2 400A 3-Pole switching Bus bar system 40mm Connection Screw M10 elec mon.
EAN/UPC Code	9008567006399
Frequency (Hz)	50 ... 60 Hz
Rated voltage AC IEC	690 V
Rated voltage DC IEC	440 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 DC 21 B @ Ue = DC 440 V; Ie = 400 A
Switchability	3-pole switching
RoHS Compliant	Yes
AC or DC	AC/DC
Short Circuit Current Rating (SCCR)	80kA@Ue = AC 400 V; Ie = 400 A / 80kA@Ue = AC 500 V; Ie = 400 A / 80kA@Ue = AC 690 V; Ie = 315 A
Fuse Size	2
Design Details	with electronic fuse monitoring ESÜ installed (rated voltage = 525VAC)
Number of Poles	3-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	60 W
Rated short circuit making capacity with solid links Icm	10.6 kA
Installation Mounting	Bus bar system 40 mm
Product Width	204.5 mm
Product Length	149 mm
Product Height	259 mm
Sell Pack Quantity	1 EA
Sell Pack Weight	4.6 kg
Sell Pack Width	208 mm
Sell Pack Length	262 mm
Sell Pack Height	185 mm
Product group	IEC Fuse Switch Disconnectors
Conventional Free Air thermal Current With Fuse-Links Ith	400 A
Product Weight	4.6 kg
Conventional Free Air thermal Current - Solid Links	530 A
HS Code	85365080
Country of Manufacture	Hungary
Poles	3-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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Request within 30 days

Changed your mind or ordered the wrong item? Request a return within 30 days of receipt. There is no restocking charge.

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Faulty or damaged items

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We will review the issue and arrange an appropriate resolution under our terms and conditions and your statutory rights.

Made-to-order items

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This does not affect claims for faulty goods or items that do not meet the agreed specification.

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Send your order number, product details and reason for return. For faults or delivery damage, include photographs if available. We will confirm the next steps.

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