MERSEN FUSE MB2 400A 3P 1.000.856 1.000.856

NH fuse-switch disconnector MULTIBLOC® Size 2 offers robust 3-pole switching for bus bar systems with 40mm spacing, supporting up to 400A with secure M10 screw terminal connections and electromechanic fuse monitoring MZS.

SKU: Z1023062Alt SKU: 1.000.856MPN: Z1023062

List Price £1,017.76 ex VAT

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

The NH fuse-switch disconnector MULTIBLOC® Size 2 offers robust 3-pole switching for demanding bus bar systems with a standard 40mm spacing, supporting applications up to 400A. Engineered for reliability and safety, it features secure M10 screw terminal connections to ensure stable conductivity and long-term operational integrity.

Ideal for industrial installations requiring rapid, tool-assisted fuse replacement and low maintenance, this disconnector is designed for straightforward integration into modern electrical panels. Choose elecmec MON. 1.000.856 (SKU Z1023062) to optimise system uptime and compliance with stringent electrical standards.

Product Code: Z1023062

Key Benefits

Reliable 3-pole switching for enhanced safety and control.
Supports high current rating up to 400A for demanding industrial applications.
Standard 40mm bus bar spacing ensures compatibility with existing systems.
Secure M10 screw terminal connections for stable and long-lasting conductivity.
Electromechanic fuse monitoring (MZS) with galvanic isolation for improved operational safety.
Tool-assisted fuse replacement reduces downtime and maintenance effort.
RoHS compliant, ensuring environmental and safety standards are met.

Compatibility

This fuse-switch disconnector is compatible with IEC fuse switch disconnector panels and bus bar systems with 40mm spacing. It supports NH fuse size 2 and is suitable for use in both AC and DC electrical systems up to 690 V AC and 440 V DC respectively. The product integrates seamlessly with electromechanic fuse monitoring devices such as the MZS module.

Applications

Industrial electrical distribution panels and switchboards.
Bus bar systems requiring compact and safe fuse switching solutions.
Heavy machinery protection in manufacturing plants.
Electrical installations demanding high short circuit current ratings.
Systems requiring galvanic isolation and fuse monitoring for enhanced safety.

Technical Specifications

Current	400 A
Phase	Three Phase
Item number	Z1023062
Catalogue No	1.000.856
Description	NH fuse-switch disconnector MULTIBLOC® Size 2 400A 3-Pole switching Bus bar system 40mm Connection Screw M10 elecmec mon.
EAN/UPC Code	9008567002315
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 electromechanic fuse monitoring MZS installed (galvanic isolation)
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	207 mm
Product Height	259 mm
Sell Pack Quantity	1 EA
Sell Pack Weight	5.28 kg
Sell Pack Width	210 mm
Sell Pack Length	340 mm
Sell Pack Height	220 mm
Product group	IEC Fuse Switch Disconnectors
Conventional Free Air thermal Current With Fuse-Links Ith	400 A
Product Weight	5.28 kg
Conventional Free Air thermal Current - Solid Links	530 A
Poles	3-pole
Device Type	Fuse switch disconnector
Voltage	690 V

Frequently Asked Questions

What is the rated current of this fuse-switch disconnector?

The rated current is 400A, suitable for demanding industrial applications.

Is this product suitable for both AC and DC applications?

Yes, it supports AC voltages up to 690 V and DC voltages up to 440 V.

What type of fuse size does it support?

This disconnector supports NH fuse size 2.

Does it include fuse monitoring?

Yes, it includes electromechanic fuse monitoring MZS with galvanic isolation.

What is the mounting style for this product?

It is designed for bus bar systems with a 40 mm spacing.

Common Search Terms

NH fuse switch disconnector, MULTIBLOC Size 2, 400A fuse switch, 3-pole fuse disconnector, bus bar fuse switch, electromechanic fuse monitoring, M10 screw terminal fuse switch, IEC fuse switch disconnector, industrial fuse switch, 40mm bus bar fuse switch

Current	400 A
Phase	Three Phase
Item number	Z1023062
Catalogue No	1.000.856
Description	NH fuse-switch disconnector MULTIBLOC® Size 2 400A 3-Pole switching Bus bar system 40mm Connection Screw M10 elecmec mon.
EAN/UPC Code	9008567002315
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 electromechanic fuse monitoring MZS installed (galvanic isolation)
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	207 mm
Product Height	259 mm
Sell Pack Quantity	1 EA
Sell Pack Weight	5.28 kg
Sell Pack Width	210 mm
Sell Pack Length	340 mm
Sell Pack Height	220 mm
Product group	IEC Fuse Switch Disconnectors
Conventional Free Air thermal Current With Fuse-Links Ith	400 A
Product Weight	5.28 kg
Conventional Free Air thermal Current - Solid Links	530 A
Poles	3-pole
Device Type	Fuse switch disconnector
Voltage	690 V

UK delivery

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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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