SIVACON S8 is a modular low-voltage switchgear and motor control centre system for industrial and infrastructure power distribution. Harju Elekter designs and manufactures SIVACON S8 assemblies under Siemens licence, combining proven system technology with in-house engineering, manufacturing and project support.
We have worked with Siemens for over 30 years and have been an authorised SIVACON Technology Partner since 2006.
Our experience spans customised low-voltage switchgear projects, complex industrial applications and repeatable manufacturing programmes.
Authorised Siemens SIVACON Technology Partner
Cooperation with Siemens
Harju Elekter manufactures key SIVACON S8 components in-house, including mechanical parts, frames, enclosures and copper busbars. Our integrated manufacturing capabilities support customised switchgear projects, larger production volumes and serial manufacturing.
Mechanical parts and structural frames produced in-house for consistent quality and project-specific configurations.
Switchgear enclosures and sheet metal components, with full control over dimensions and assembly quality.
Busbars manufactured and processed in-house to match each project’s current-carrying requirements.
Capacity for customised projects, larger order volumes and serial production.
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Harju Elekter provides a coordinated delivery process for Siemens SIVACON S8 projects, covering engineering, component manufacturing, electrical assembly, testing and factory acceptance testing (FAT).
By combining these activities within our manufacturing operations, we support consistent quality, technical coordination and efficient project execution.
Project-specific engineering, configuration and manufacturing documentation.
In-house enclosures, frames, mechanical parts and copper busbars.
Assembly and integration to the approved project configuration.
Testing and quality control throughout production, followed by FAT against agreed project requirements.
How we engineered a high-capacity 2500 A Siemens SIVACON S8 low-voltage distribution board to meet the space and
How we engineered a space-optimised 3150 A Siemens SIVACON S8 low-voltage main distribution board to support demanding industrial
How we engineered and manufactured four Siemens SIVACON S8 low-voltage main distribution boards to provide reliable, segmented power
SIVACON S8 combines power distribution and motor control functions in one modular switchgear platform. Fixed, plug-in and withdrawable functional units can be configured to match the application and maintenance concept.
Main busbar system
Main busbars rated up to 7010 A with a short-time withstand current of up to 150 kA, 1 s.
Functional units
Withdrawable and plug-in units can be modified or replaced under operating conditions.
Internal separation
Internal separation up to Form 4 and arc fault testing to IEC/TR 61641.
All functions
Main distribution, motor control centre, frequency converters and reactive power compensation.
Key SIVACON S8 ratings and mechanical options. Final configuration depends on the selected functional units, project requirements and applicable standards.
Rated operational voltage Ue
up to 690 V, 50 Hz
Rated impulse withstand voltage Uimp
up to 12 kV (device-dependent)
Rated insulation voltage Ui
1000 V
Pollution degree
3
Main busbars – rated current
up to 7010 A
Main busbars – peak withstand current Ipk
up to 330 kA
Main busbars – short-time withstand current Icw
up to 150 kA, 1 s
Vertical busbars (universal mounting)
up to 1600 A / Icw 65 kA, 1 s
Circuit breakers (3WA/3VA)
up to 6300 A
Cable feeders
up to 630 A
Motor feeders
up to 250 kW
Internal separation
Form 1 to Form 4 (IEC 61439-2)
Degree of protection
IP30, IP31, IP40, IP41, IP43, IP54
Mechanical strength
up to IK10
Height without base
2000 / 2200 mm
Base height (optional)
100 / 200 mm
Cubicle width
200, 350, 400, 600, 800, 850, 1000, 1200 mm
Cubicle depth
500, 600, 800, 1000, 1200 mm
Busbar position
500, 600, 800, 1000, 1200 mm
Standard colour
500, 600, 800, 1000, 1200 mm
Installation
Indoor, +35 °C 24-h mean (−5 °C to +40 °C)
IEC 61439-2
Design verification of low-voltage switchgear assemblies
IEC/TR 61641
Testing under internal arc fault conditions
IEC/TS 63107
Active arc fault protection systems
IEC/TS 63107
Protection against electric shock
IEC/TS 63107
Ingress and impact protection ratings
IEC/TS 63107
Vibration and seismic testing
DNV
Type approval for applicable marine and offshore configurations
Whether you need a customised switchgear solution, a larger industrial project or a serial manufacturing partner, Harju Elekter is ready to discuss your requirements.
