SIVACON S8
Safe and intelligent power distribution
Tested safety
SIVACON S8 stands for safety at a high level. The low-voltage switchboard is a design verified power switchgear and controlgear assembly; the design is verified by tests according to IEC 61439-2. Its physical properties have been verified at the testing laboratory for both operation and failure situations. Personal safety is furthermore ensured by verification of the test under condi- tions of arcing in accordance with IEC/TR 61641.
Flexible solutions
SIVACON S8 offers intelligent solutions which can be adapted to match your requirements. Different mounting designs can be combined in one cubicle with ease. The flexible modules allow for the simple exchange or addition of func- tional units. The SIVACON S8 modules undergo a continuous innovation process, thereby ensuring the technical progress for the overall system.
Your benefit
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Safety for people and plant
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by means of design verification with tests according to
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IEC 61439-2
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Personal and plant safety in case of arcing by means of tests according to IEC/TR 61641
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High flexibility due to innovative modular design


Flexible framework for high stability, corrosion protection and safe earthing
Frame, enclosure and busbars

Flexible framework for high stability, corrosion protection and safe earthing

Variable busbar positions (rear or top)
The SIVACON S8 switchboard offers a perfect combination of a cost efficient structure and high quality. The target is clear: a perfect equipment for all of your demands – versatile, safe, user-friendly, and easy to operate. The intelligent design of SIVACON S8 is our answer to these requirements.
Title | Properties |
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Degree of protection | In accordance with IEC 60529: IP30, IP31, IP40, IP41, IP43, IP54 |
Base height (optional) | 100, 200 mm |
Frame height (without base) | 2000, 2200 mm |
Door opening angle | 125°, 180° with stand-alone installation |
Title | Properties |
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Rated short-time withstand current (Icw) | Up to 150kA |
Rated peak withstand current (Ipk) | Up to 330kA |
Rated currents | Up to 7000A |
Cubicle in universal mounting design

Enclosure
1. Roof plate
2. Rear wall
3. Design side wall
4. Frame
5. Base cover
6. Base
7. Base compartment cover, ventilated
8. Cubicle door, ventilated
9. Compartment door
10. Head room door
Busbars
11. Main busbar (L1 ... L3, N) top
12. Main busbar (L1 ... L3, N) rear top
13. Main busbar (L1 ... L3, N) rear bottom
14. Main busbar (PE) – bottom
15. Distribution busbar (L1 ... device compartment
16. Distribution busbar (PE) - cable compartment
17. Distribution busbar (N) - cable compartment
Internal separation
18. Device compartment/ busbar compartment
19. Cubicle to cubicle
20. Compartment to compartment 21. Cross-wiring compartment
Your benefit
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Personal safety thanks to the patented door locking system
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Arrangement of busbar positions suitable for the application
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High level of flexibility thanks to variable busbar systems
Where more current is needed, e.g. in incoming feeder cubicles or outgoing feeder cubicles for high-power consumer loads, the circuit-breaker design offers a powerful, compact solution.
Technical data | |
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Busbar position | Top, rear top and/or rear bottom |
Internal separation | Form 1, 2b, 3a, 4b, 4 type 7 (BS) |
Cubicle width (mm) | 400, 600, 800, 1000, 1400 |
Type of connection | Front or rear |
Nominal current In
of the circuit breaker | Up to 6300A |
Functions | Incoming feeder, outgoing feeder, transversal or longitudinal coupler |
Mounting design | Fixed-mounted design, withdrawable design |
Your benefit
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Safety by connected, test and disconnected position with the door closed
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Optimum cubicle width for every circuit-breaker size
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Ideal space conditions for cable connection, for every size
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Design verified connection to SIVACON 8PS busbar trunking systems
User-friendly with safety
The cubicles for 3W./3V. circuit breakers cater for personal safety and long-term operational reliability. The incoming feeder, outgoing feeder and coupling cubicles in circuit-breaker design are fitted with 3W. air circuit breakers in withdrawable or fixed-mounted design or, alternatively, with 3V. molded case circuit breakers.
Since there are generally many consumer loads downstream from these cubicles, the personal safety and operational reliability of these are of particular impor- tance. SIVACON S8, with its components of the circuit-breaker design, meets all these requirements in compact and safe manner.
Moving to the connected, test or disconnected position with the 3W. air circuit breaker takes place with the door closed. Design verification by tests in accordance with IEC 61439-2 also guarantees a high level of safety for all sizes.
Cost-efficient solutions
As a compact version with a cubicle width of just 400 mm, the cubicle with 3W. air circuit breaker is perfectly suitable for current ratings up to 2,000 A. For a cost-efficient installation, the cir- cuit-breaker cubicle with a width of
600 mm offers enough space for up to three circuit breakers. In this version,
the connection is made at the rear.
Cubicles in circuit-breaker design can be equipped with forced cooling. The use of fans considerably reduces the circuit- breaker derating caused by operational power loss. Cubicle properties such as degree of protection or a high form of internal separation are not restricted thereby.
Flexible for individual requirements
The cubicles consist of separate functional compartments. In the cable or busbar connection compartment,
the circuit-breaker design offers optimal connection conditions for every size.
There, cables or SIVACON 8PS busbar trunking systems can be connected with design verification. The busbar trunking system connection units, specially developed for SIVACON S8, are an integral component of the cubicles in circuit-breaker design.
The auxiliary device compartment offers ideal space conditions for the switching devices provided for control and monitoring. They are arranged on an auxiliary device holder which can be separated from the power section. Depending on the position of the cable or busbar connection compartment, the auxiliary device holder can be installed at the top or bottom.

3WL air circuit breaker in withdrawable or fixed-mounted design

Compact cubicles with circuit-breaker design

Inspection of the 3WL air circuit breaker is possible at any time without removal.

Cooling system with fans underneath the 3WL circuit breaker

Continuous power supply by means of design verified connection to SIVACON 8PS busbar trunking systems

SIVACON S8 offers high plant safety and uninterrupted power supply for all requirements in functional buildings.
Universal mounting design
If there is little space available, the universal mounting design offers a safe, flexible and cost-efficient solution. It allows to com- bine different mounting designs – withdrawable, fixed-mounted with compartment doors, plug-in – in one cubicle. As a version in withdrawable design it is the ideal solution for Motor Control Centers in industrial plants, where quick adjustments of the power supply system are always required.
Technical Data | Properties |
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Internal separation | Form 3b, 4a, 4b, 4 type 7 (BS) |
Cubicle width (mm) | 600, 1,000, 1,200 |
Type of connection | Front and rear |
Functions | Cable feeders up to 630A
Motor feeders up to 250 kW (at 400V) |
Mounting design | Withdrawable design, fixed-mounted design with compartment doors, plug-in design |
Busbar position | Top, rear top and/or rear bottom |
Your benefit
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High level of flexibility and effi- ciency by functional assemblies which can be combined as required in space-optimised modular design
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Personal safety, even in the event of a fault, thanks to closed front doors in all withdrawable unit positions (connected, test, disconnected positions)
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Long service life thanks to patented low-wear contact system
Flexible and space-saving
The functional assemblies can be combined at will, allowing for a space- saving installation of your switchboard. The 400 mm or 600 mm wide cable compartment on the right side of the cubicle offers cable brackets for fastening the cables. In universal mounting design, the cables can also be connected at the rear, which makes the lateral cable com- partment unnecessary, thus reducing the cubicle width to 600 mm. The vertical distribution busbars are arranged at the rear left in the cubicle. The profile busbar or flat copper design allows for tap-offs in the smallest of grids. Cables, wires or busbars can also be connected without any need for drilling or punching – opti- mal flexibility for later extensions.
Extended mounting options
Cubicles in universal mounting design can be provided with forced ventilation to enable the installation of devices with extremely high power loss in withdraw- able design. The heat is dissipated by fans via a separate air duct. The fans are sized so that heat removal of the with- drawable unit is ensured even if one of the fans fails.
Communication
Communication via PROFIBUS DP, PROFINET or Modbus offers all the benefits of extensive control functions and analysis options.
Fixed-mounted design – modular and cost-efficient
The fixed-mounted switching devices are installed on modular device holders. These can be equipped with circuit breakers or switch disconnectors with fuses.
Cable connection is made directly at the device or, in cases of higher requirements, at special connection terminals in the cable compartment. For individual equipping, the system offers freely assignable device holders.
Plug-in design – flexible modifications
3NJ62 or SASILplus (JEAN MÜLLER) switch disconnectors with fuses can be installed in the bottom 600 mm of the device compartment. They are equipped with a plug-in contact on the supply/line side. This means that the switch discon- nector can be replaced or modified without de-energising the cubicle.
Withdrawable design – ergonomic and compact
When requirements are frequently changing, e.g. modifications in
motor rating or the connection of new consumer loads, the withdrawable design offers the flexibility needed. Withdrawable units can be modified or retrofitted with ease, and without de-energising the cubicle.
Regardless of whether small or normal withdrawable units are used, the size is optimally adapted to the required power rating, thus allowing to reduce the size of the switchboard to a minimum. The compact small withdrawable units are particularly useful here.
With small withdrawable unit sizes of 1/4 (up to four withdrawable units per compartment) and 1/2 (up to two with- drawable units per compartment), as well as with normal withdrawable units with heights starting from 100 mm, very high packing densities can be achieved, with up to 48 withdrawable units per cubicle for space-optimised installation.
Safe operation of the withdrawable units
Withdrawable units of all sizes are equipped with integrated operating error protection and a uniform, clear indication of the withdrawable unit positions. Moving to the test, disconnected or connected position takes place with the door closed and without eliminating
the degree of protection.
In addition to the main switch, the dis- connected position of the withdrawable units can also be locked for additional safety. A coding of the withdrawable unit prevents any confusion of withdrawable units of the same size.
The patented withdrawable unit contact system has been conceived to be user- friendly and particularly wear-resistant. In order to protect against damage, in the disconnected position all parts of the withdrawable units are located within the contours of the withdrawable units. The withdrawable unit compartments have isolating distances on the incoming and outgoing sides. No connection work is required inside the withdrawable unit compartments.
Motor management and control device SIMOCODE pro
SIMOCODE pro is a flexible, modular motor management system for motors with constant speed in the low-voltage range. It optimises the link between control system and motor feeder, increases plant availability and offers at the same time considerable savings during construction, commissioning, operation and maintenance of a plant.
SIMOCODE pro, which is installed in the low-voltage switchboard, is the intelligent link between higher-level automation system and motor feeder, and combines:
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multi-functional electronic full motor protection, independent of the automation system,
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safe shutdown of motors,
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integrated control functions,
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detailed operation, service and diagnosis data,
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open communication via PROFIBUS, PROFINET or Modbus,
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automatic parameter assignment to the motor feeder thanks to fixed installation of the SIMOCODE pro initialization module in the withdrawable unit compartment.

The withdrawable design offers sizes of withdrawable units adjusted to the power – with small withdrawable units for high packing densities.

Withdrawable design, fixed-mounted design with compartment doors, and switch disconnectors with fuses can be combined.

Wide cable connection duct for easy installation


The universal mounting design with forced ventilation enables the installation of withdrawable units for devices with extremely high power loss, such as frequency converters.

Fixed-mounted design with 3VA circuit breaker

Plug-in design with 3NJ62 switch-disconnectors with fuses

Simple and safe operation of the withdrawable units behind closed doors

The mechanical coding of the withdrawable unit prevents any confusion of withdrawable units of the same size.

Integrated full motor protection, including communication for intelligent linking to the control level

High level of availability of the Motor Control Center even in a harsh industrial environment
Fixed-mounted design with front covers
If the replacement of components under operating conditions is not required, or if short downtimes are acceptable, then the fixed- mounted design with front covers offers a safe and cost-efficient solution.
Technical data | |
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Busbar position | Top, rear top and/or rear bottom |
Internal separation | Form 1, 2b, 3b, 4a, 4b |
Functions | Cable feeders up to 630A |
Type of connection | Front |
Cubicle width (mm) | 1000, 1200 |
Mounting design | Fixed-mounted design with front covers |
Your benefit
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Cost-efficient arrangement
of devices as single or multiple feeders -
More safety thanks to design verified standard modules
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High level of flexibility through the combination of high-rating outgoing feeders and modular installation devices
Safe and cost-efficient
Individual functional assemblies can be combined in modular design as desired, therefore offering you all the flexibility that you need.
Additive modules enable functional compartments to be subdivided as required (up to form 4b). The cables are routed at the right side of the cubicle in a cable compartment with a choice of width of either 400 mm or 600 mm. Cable brackets are provided here for fastening the cables.
Flexible and space-saving
The vertical distribution busbars are arranged at the rear left in the cubicle. The profile busbar or flat copper design allows for tap-offs in the smallest of grids. Connections to the distribution busbars by means of cables, wires or busbars are also possible without any need for drilling or punching. This guarantees maximum flexibility, even for later extensions.
Multifunctional modules
The switching devices are installed on modular device holders of graduated depth. These can be equipped with circuit breakers, fuse switch disconnec- tors, or modular installation devices. They are attached to the device holder and directly connected to the distribution busbar. The cable connection is made directly at the device or, in cases of higher requirements, at special connection terminals. Thanks to the cover, simple operation is possible directly at the device. The cubicle can be optionally closed with a glass door.

Where an exchange of components under operating conditions is not required, the fixed-mounted design with front covers is a safe and cost-efficient solution.

Installation of fuse switch disconnectors, circuit breakers, or modular installation devices

The front covers in the fixed-mounted design cubicle are easy to install and guarantee a uniform front level

The multi-profile busbar allows for easy mounting of modular installation devices
In-line design, plug-in
In-line switching devices with a plug-in contact on the supply/ line side offer a cost-efficient alternative to the withdrawable design and, thanks to their modular design, allow for quick and easy modification or replacement under operating conditions.
Technical Data | |
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Busbar position | Top, rear top and/or rear bottom |
Internal separation | Form 3b, 4b |
Cubicle width (mm) | 1000, 1200 |
Type of connection | Front |
Functions | Cable feeders up to 630A |
Mounting design | Plug-in design |
Your benefit
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High level of plant availability thanks to modification or replacement under operating conditions
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Simple and cost-efficient mounting due to plug-in contact on the supply/line side
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High packing density with up to 35 feeders per cubicle
Variable with plug-in design
The 3NJ62 in-line switch disconnectors with fuses are suitable for cable feeders up to 630A.
Alternatively, SASILplus (JEAN MÜLLER) switch disconnectors with fuses can be used. With up to 35 feeders per cubicle, the switching devices achieve a high packing density.
The cables are routed vertically at the right side of the cubicle in a cable com- partment with a choice of width of either 400 mm or 600 mm. Cable brackets are provided here for fastening the cables.
Safe and flexible
The distribution busbar system is arranged at the rear of the in-line design cubicle. It offers test finger safety (IP20B) to live parts. The tap-off openings are arranged in a 50 mm modular grid. This guarantees maximum flexibility, even for later extensions.
Compact with high functionality
The cable is connected directly at the device. The device forms the front closure. The plug-in in-line switch disconnectors are operated directly at the device. Up to three required current transformers can be installed in the in-line device within its contours. Auxiliary switches and measuring devices can be integrated in the in-line switch disconnector. Device compartments are available for individual equipping.

3NJ62 switch disconnectors with fuses feature single or double breaking as standard.

The cubicle for 3NJ62 switch disconnectors with fuses is suitable for up to 35 outgoing feeders.

Plug-in busbar system, with test finger safety cover

The in-line design is particularly well-suited for applications with numerous cable feeders in a very confined space.
In-line design, fixed-mounted
If the replacement of components under operating conditions is not required, or if short downtimes are acceptable, then fixed-mounted in-line fuse switch disconnectors offer a safe and cost-efficient solution.
Technical Data | |
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Busbar position | Rear top, and/or rear bottom |
Internal separation | Form 1, 2b |
Cubicle width (mm) | 600, 800, 1000 |
Type of connection | Front |
Functions | Cable feeders up to 630A |
Mounting design | Fixed-mounted design |
Your benefit
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Space-saving thanks to the compact design with up to 18 feeders per cubicle
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Consequent, cost-efficient installation
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Optional installation of freely assignable device holders or ALPHA small distribution board for modular installation devices
Compact and safe
The cubicles for cable feeders in the fixed-mounted design up to 630 A are equipped with vertically installed 3NJ4 fuse switch disconnectors.
Thanks to their compact design they allow for optimal and cost-efficient applications in infrastructure.
Depending on the cubicle width, several switch disconnectors of size 00 to 3
can be installed. A mounting plate can be provided in the cubicle for the installation of additional auxiliary devices. Alternatively, an ALPHA small distribution board can be installed.
Cost-efficient and adaptable
As a distribution busbar system, various cross-sections are available which are arranged horizontally at the rear inside the cubicle.
The protective conductor, PEN or neutral conductor bars are installed separately from the phase conductors in the cable compartment, either at the top or the bottom of the cubicle, depending on the connection.
Flexible design
The switch disconnectors are fixed- mounted on the horizontal distribution busbar system. The cable is connected directly at the device. The cables can be routed into the cubicle from the top or the bottom.
A cubicle-height door provides the front closure. This door can be optionally fitted with a cutout area, which allows to operate the switching devices when the door is closed. Operation takes place directly at the device. The switch discon- nectors can be fitted with up to three current transformers to enable feeder- related measurements.

With a wide range of connection options, the compact devices can be optimally fitted, even where space is limited.

With the fixed mounted 3NJ4 fuse switch disconnectors, it is possible to install up to 18 feeders per cubicle.

3NJ4 in-line fuse switch disconnectors with cable compartment for connection from the bottom

In office complexes, space saving and cost effective switchboard installation is requested.
Reactive power compensation
Cubicles for the central reactive power compensation relieve transformers as well as cables and reduce transmission losses. In this way, reactive power compensation cubicles enable an economic power supply with efficient network dimensioning.
Title | Properties |
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Functions | Central compensation of reactive power |
Capacitor power | Unchoked up to 600 kvar,
choked up to 500 kvar |
Degree of choking | Without, 5.67%, 7%, 14% |
Type of connection | Front |
Cubicle width (mm) | 800 |
Internal separation | Form 1, 2b |
Busbar position | Without, top, rear top and/or rear bottom |
Mounting design | Fixed-mounted design |
Your benefit
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More cost-efficient thanks to lower energy costs
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Efficient network dimensioning thanks to low reactive power
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Design verified integration directly to the switchboard or as a separate cubicle
Cost-efficient overall system
In a network, reactive power is caused by inductive, linear consumer loads such as motors, transformers or reactors, as well as by inductive, non-linear consumer loads such as converters, welding apparatus, arc furnaces or UPS systems. Depending on the consumer load structure, the reactive power compensation is equipped with choked or unchoked capacitor assemblies. The controller assembly has an electronic reactive power controller for door installation. The multifunction display is used to set the desired target cos phi from 0.8 ind to 0.8 cap. Network parameters such as U, l, f, cos phi, P, S, Q and harmonics are displayed.
The capacitor assembly (up to 200 kvar) with MKK capacitors has a fuse switch- disconnector, capacitor contactors, discharge devices and filter reactors. The switch-disconnector assembly can optionally be used for the central safety isolation of the integrated capacitor assemblies.
Flexible design
The reactive power compensation cubicle can be integrated into the switchboard directly and with design verification. In this case, additional protection mea- sures and cable connections between the switchboard and the reactive power compensation are not required when these are installed separately. The entire height of the device compartment is available for the installation of the controller, capacitor or group-switch assemblies. The device compartment is closed by means of a cubicle-height door with ventilation openings.

The capacitor assemblies can be used in choked or unchoked condition.

Cubicle for the central reactive power compensation

Reactive power is caused by inductive consumer loads such as motors.
