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Approvals & Standards

  • IEC/EN 60 947-3
  • For NH fuse-links size 2 in accordance with IEC/EN 60269-2, VDE 0636-2

Key features & benefits

The production programme of MULTIBLOC® 2.RST8 comprises NH fuse switch disconnectors for 400A.
Products are designed in triple pole units for direct installation on to 40 mm and 60 mm bus bar systems.
For installation of MULTIBLOC® NH fuse switch disconnectors of different sizes in distribution units with central cover, respective covers are used to obtain a uniform profile in height and length.
MULTIBLOC® size 2 are designed for NH fuse-links in accordance with IEC/EN 60269-2, VDE 0636-2, size 2: 400A.
The system is a modular system, which allows the installation and combination of individual components. MULTIBLOC® offers the user the possibility of fast and easy installation as well as a high degree of security during installation and maintenance.

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Product Specifications

Item Number


Catalog number



NH fuse-switch disconnector MULTIBLOC® Size 2 400A 3-Pole switching Bus bar system 40mm Connection Screw M10 elecmec mon.  

EAN/UPC code



50 ... 60   Hz

Rated voltage AC IEC

690   V

Rated voltage DC IEC

440   V

Rated current

400   A

Utilization Category

AC 23 B @ Ue = AC 400 V; Ie = 400 A  

Utilization Category

AC 22 B @ Ue = AC 500 V; Ie = 400 A  

Utilization Category

AC 21 B @ Ue = AC 690 V; Ie = 315 A  

Utilization Category

DC 21 B @ Ue = DC 440 V; Ie = 400 A  


Triple pole switching  

ROHS Compliant


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


Design Details

with electromechanic fuse monitoring MZS installed (galvanic isolation)  

Number of Poles


Degree of pollution


Rated Duty

uninterrupted duty  

Rated Impulse Withstand Voltage Uimp

12   kV

Rated Insulation Voltage

1000   V

Rated SC Withstand

13 kA / 1 s  

Conventional Free Air thermal Current With Fuse-Links Ith

400   A

Conventional Free Air thermal Current - Solid Links

530   A

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  


Cable termination components : 3 M10 terminal screws  

Product Weight

5.28   kg

Product Width

204.5   mm

Product Length

207   mm

Product Height

259   mm

Sell Pack Quantity

1   EACH

Sell Pack Weight

5.28   kg

Sell Pack Width

210   mm

Sell Pack Length

340   mm

Sell Pack Height

220   mm