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3VA concept 3VA-line

3VA molded case circuit breakers employ a flexible communication concept which can be tailored to specific customer requirements.

This concept is described in general terms below.

Communication concept structure

The structure of the modular communication concept is illustrated in the diagram below

The flexible communication solution with the COM800 breaker data server

3VA2 molded case circuit breakers utilize an innovative, modern communication concept. This concept is based on the COM800 breaker data server which can link up to eight 3VA2 molded case circuit breakers to different fieldbus systems.

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The COM800 / COM100 breaker data servers (see below, section "The smart communication solution with a COM100") provides an integrated Ethernet interface for operation of the circuit breaker with powerconfig, powermanager, the DSP800 display and all third-party systems which support the Ethernet (Modbus TCP) protocol.

If the Switched Ethernet PROFINET and PROFIBUS DPV 1 expansion modules are installed, the 3VA2 molded case circuit breaker can be modularly integrated into the PROFINET and PROFIBUS landscape of TIA (Totally Integrated Automation), i.e. of the SIMATIC system.

The communication equipment for the molded case circuit breakers can be installed and connected up extremely easily, reliably and efficiently thanks to the connector system used. The 24 V DC supply to the electronic trip units is also reliably provided by these connections.

The COM800 breaker data server utilizes independent supplementary functions to deliver valuable information about the connected molded case circuit breakers and the power distribution system.

  • Expansion of the tripping history on the basis of the scope, quantity and time stamps of trip events

  • Generation of minimum and maximum values

  • Monitoring of limits for measured variables of the electronic trip units

  • Power demand

You can find additional information in the 3VA Communication system manual (see Reference documents).

Further features of the COM800 breaker data server:

  • Write-protect switch for the COM800 breaker data server and connected molded case circuit breakers

  • For mounting on a 35 mm DIN rail or screw mounting by integrated fixing lugs

  • Integrated Ethernet interface: Modbus TCP

  • Access by powerconfig software to the COM800 breaker data server and connected molded case circuit breakers

COM800 / COM100 breaker data server and DSP800 display

The DSP800 display is designed for mounting in the cubicle door and can be optionally connected to the Ethernet (Modbus TCP) interface integrated in the COM800 / COM100 breaker data server. The DSP800 is the display unit for the breaker data server and therefore displays the data of up to eight 3VA2 molded case circuit breakers connected to the server.

The start page of the DSP800 displays the status and maximum current of all 3VA2 devices. All the detailed information about individual molded case circuit breakers can be selected via the efficiently structured menu. This includes

  • Measured values of ETU 5-series and 8-series

  • ETU setting parameters

  • Status

  • Diagnostics

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The smart communication solution with a COM100

For applications involving only one 3VA2 molded case circuit breaker, the COM100 is an ideal alternative to the COM800 breaker data server.

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The COM100 is identical in design to the COM800 breaker data server, i.e. it is connected directly to the COM060 communication module in the 3VA2 molded case circuit breaker by means of a cable. By contrast with the flexibility offered by the COM800 breaker data server, only one single 3VA2 molded case circuit breaker can be connected to each COM100 unit.

Like the COM800 breaker data server, the COM100 features an on-board Ethernet (Modus TCP) interface and the option to install an additional PROFINET or PROFIBUS module.

Structure of the COM100 communication concept

The structure of the modular communication structure is illustrated in the diagram below:

COM800 breaker data server

24 V supply

3VA-line connection

Terminating resistor

Integrated Ethernet interface with Ethernet (Modbus TCP)

7KM PAC PROFIBUS DP expansion module

7KM PAC Switched Ethernet PROFINET expansion module

DSP800 display (powermanager and powerconfig can also be connected)

Connecting cable

T-Connector

COM060 communication module integrated in 3VA2 molded case circuit breaker

Up to a total of 8 3VA2 molded case circuit breakers per COM800

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COM100

24 V supply

3VA-line connection

Terminating resistor

Integrated Ethernet interface with Ethernet (Modbus TCP)

7KM PAC PROFIBUS DP expansion module

7KM PAC Switched Ethernet PROFINET expansion module

DSP800 display

Connecting cable

T-Connector

COM060 communication module integrated in 3VA2 molded case circuit breaker

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