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Approvals & Standards

  • IEC/EN 60 947-3
For NH-fuse links size 1 and size 2
in accordance with IEC/EN 60 269,
VDE 0636

Key features & benefits

The production programme of MULTIBLOC® 800VAC comprises NH
fuse switch disconnectors for 800VAC voltage application. This
range includes Size 1 (1.ST8) and Size 2 (2.ST8) Multibloc and answers
the specific needs of Photovoltaic application for using String
inverters rated at 800Vac.
They are designed for bottom fitting/panel installation and are
available in triple pole units.
For installation of MULTIBLOC® NH fuse switch disconnectors in
distribution units with central cover, respective covers are used to
obtain a uniform profile in height and length.
MULTIBLOC® size 1 and size 2 are designed for NH fuse-links in
accordance with IEC/EN 60269, VDE 0636, size 1 and size 2, 160A
and 250A.
MULTIBLOC® offers the user the possibility of fast and easy
installation as well as a high degree of security during installation and

More specifications


  • Power distibution and Motor protection
  • Photovoltaic application: Protection on lines of String inverters rated at 800VAC

Product Specifications

Item Number


Catalog number


Item Description (ERP)

MB1 800VAC 160A 3P 8.002.562  


MULTIBLOC 1.ST8 size 1 / 160A, 3-pole AC 800V, clamp strap 1.000.420  

EAN/UPC code



50 ... 60   Hz

Rated voltage AC IEC

800   V

Rated current

160   A

Utilization Category

AC 23 B @ Ue = AC 400 V; Ie = 250 A  

Utilization Category

AC 22 B @ Ue = AC 500 V; Ie = 250 A  

Utilization Category

AC 21 B @ Ue = AC 690 V; Ie = 200 A  

Utilization Category

DC 21 B @ Ue = DC 440 V; Ie = 250 A  


1-,2-,3-,4-pole switching  

ROHS Compliant


Short Circuit Current Rating (SCCR)

Ue=AC 800 V; Ie=160 A 10kA Ue=AC 800 V; Ie=250 A 10kA  

Fuse size


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

8 kA / 1 s  

Conventional Free Air thermal Current With Fuse-Links Ith

160   A

Conventional Free Air thermal Current - Solid Links

400   A

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  


6 clamp straps 70-150 mm²  

Product Weight

2.42   kg

Product Width

184.9   mm

Product Length

110.5   mm

Product Height

246.1   mm

Sell Pack Quantity

1   EACH

Sell Pack Weight

2.42   kg

Sell Pack Width

186.9   mm

Sell Pack Length

247.9   mm

Sell Pack Height

112   mm