Low voltage cell centre systems

Cell centre systems can include both horizontal and vertical bus bars. The bus bars can be installed at any height, either in the middle part or at the back of the centre. When installed in the middle, the bus bars allow for constructing a two-sided structure.

The cell centre system is compatible with the F-series insulating flanges designed for low voltages (sizes 10×10-10x50mm) or E-series insulating flanges recommended for higher voltages (sizes 10×20-10x120mm). The bus bars can be made either of aluminium or copper.

A cable tray can be installed inside the base structure, either for the entire length of the centre or at selected sections.

Type-tested sliding or removable units have been designed for easy maintenance and replacement. The unit structure is equipped with ventilation and locking and has a separate compartment for cables and connections.

Any pressure caused by an arc short-circuiting is released via the opening ceiling structure.

Electric features

Nominal voltage Un Insulation voltage Ui Nominal current In Thermal short-circuit 
Dynamic short-circuit
strength Ipk
Nominal frequency f Arc short-circuit strength
 < 690V  1000V <3150A / <5000A < 60kA / < 100kA <132kA / < 220kA 50 – 60Hz  50kA (725V, 0,3s)

Mechanic features

Enclosure class

Impact strength (outer/inner)

Type of subdivision Material strength of doors
IP20 – IP55 IK09/07  2,3,4 1,4 mm


Frame Insulating flanges Protective screens
hot galvanized
sheet metal
 PC hot galvanized
sheet metal


Powder coating


EN 60529 EN 62262 IEC/EN 61439-1
IEC/EN 61439-2
IEC/EN 61439-3
IEC/EN 62208



WIDTH 200 300 450 600 750 900 1050
HEIGHT 1680 1980          
DEPTH 385 610          
BASE 40 140