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        7. Molded case circuit breakers

        The 3VA molded case circuit breaker. One system. Global use.

        Comprehensive range of accessory components with more than

        500 elements

        • One system well-conceived, modular, and highly variable

        • Gobal use thanks to IEC and UL approval

        Find your 3VA molded case circuit breaker

        The system in the Industry Mall
        image

        Product information

        One system. For any application.

        Requirements are increasing for cost-effective and energy-efficient operation of the electrical power distribution. Whether in industrial applications, buildings, or infrastructure: As a modular, highly variable system, the 3VA range of molded case circuit breakers provides thoroughly reliable operator and plant protection while supporting every process phase – from planning to the operation of electrical power distribution.

         

        Comprehensive certification. Global use.

        3VA molded case circuit breakers are available in several series with IEC approval as well as in series that comply with the IEC60947 and the UL489 standards. The system offers the best preconditions for machine and switchgear manufacturers. They can use all the functions of the molded case circuit breakers for plants that are operated in Europe and in North America and be completely confident of full compliance with the standards.

        Highlights
        Highlights

        • Modular, well-conceived, and highly variable system
        • High system availability thanks to an excellent selectivity concept
        • Integrated measured value acquisition
        • Simple integration into higher-level energy management and automation systems
        • Comprehensive range of accessories for flexible function expansions
        • Minimal space requirements thanks to a highly compact design
        • Optimal support in all tasks of a modern power distribution – in every phase of the engineering processes, e.g. by providing CAx data
        IEC product overview
        IEC product overview

        Tested in accordance with IEC60947

        3VA1 molded case circuit breakers

        • Performance range from 16 A to 630 A
        • Breaking capacity between 16 kA and 110 kA at 415 V AC
        • 1-, 2-, 3- and 4-pole versions
        • Thermal-magnetic trip unit
        • Suitable for DC applications
        • Available as starter protection version and as switch disconnector

        3VA2 molded case circuit breakers

        • Performance range from 25 A to 1,600 A
        • Breaking capacity between 55 kA and 150 kA at 415 V AC
        • Electronic trip unit
        • Excellent selectivity values at high breaking currents
        • Integrated measurement value display (ETU 5-series, 6-series and 8-series)
        • ETU 6-series and 8-series: integrated measurement function for current, voltage, and energy values
        • Communication capability with PROFIBUS, PROFINET, Ethernet (Modbus TCP), and Modbus RTU
        Accessories
        Accessories for 3VA molded case circuit breakers up to 1,000 A
        Accessories for 3VA molded case circuit breakers with 1,600 A
        UL product overview
        UL product overview

        Tested in accordance with UL489 and IEC60947

         

        3VA5 molded case circuit breakers

        • Line protection from 15 A to 250 A
        • Breaking capacity up to 100 kA
        • 1-pole and 3-pole breaker versions
        • Thermal-magnetic trip unit
        • Also available as a molded case switch and as a motor circuit protector

         

        3VA6 molded case circuit breakers

        • Line protection from 40 A to 600 A
        • Breaking capacity up to 150 kA at 480 V AC
        • 3-pole or 4-pole versions
        • Electronic trip unit
        • Integrated measuring function for current, voltage, and energy values
        • Optional communication via PROFIBUS, PROFINET, Ethernet (Modbus TCP), and Modbus RTU
        • Easy integration into higher-level energy management and automation systems
        • Different circuit breaker versions available as "100% rated" (uniterrupted rated current)
        Accessories

        A focus on the engineering process

        The 3VA molded case circuit breaker supports you in every stage of your engineering process, from planning to daily operation.
        Find solutions

        3VA molded case circuit breaker series are accompanied by a large number of accessories, enabling the sytem to be precisely matched to the specific needs of your project.

        • Versatile: a comprehensive range of accessories for numerous function expansions
        • Flexible: a broad and uniform range of accessories and modules
        • Space-saving: compact design for use in distribution boards or cabinets
        Minimize effort

        Save time and money in planning and installation: Our comprehensive CAx data offering ensures that your planning process becomes as efficient as possible. Even installation is significantly simplified thanks to our intelligent product portfolio.

        • Efficient: all relevant planning and engineering data available via the CAx download manager
        • Fast: standard connection technology and unique identification speed up assembly and installation, e.g. by uniform handling of all accessories for all series
        • Direct: technical product information can be accessed directly at the device using a QR code
        Create transparency

        Always maintain an overview of all the data in the system and identify energy saving potentials. This is easy thanks to the simple integration of molded case circuit breakers in higher-level energy management and automation systems.  

        • Uncomplicated: easy connection to higher-level management systems
        • Economical: integrated measuring function makes energy flows transparent and identifies saving potentials
        • Flexible: support of all current communication connections
        Ensure system availability

        The intuitive operating concept and excellent selectivity properties ensure high availability, safety, and protection of the systems.

        • Continuous: optimal system monitoring thanks to molded case circuit breakers with internal auxiliary and alarm switches
        • Reliable: excellent selectivity properties prevent downtimes of the entire system
        • Safe: safe shutdown in case of errors by identifying residual currents and differential currents

        For an intelligent power distribution – the 3VA molded case circuit breaker

        Advancing digitalization and automation are creating new challenges in electrical power distribution. Systems and components must be integration-capable, communicative, and completely flexible to reliably protect electrical systems against faults and failures. Powerful components such as 3VA molded case circuit breakers ensure the necessary safety and flexibility in digital environments:

        • Automated engineering processes thanks to a comprehensive range of software and CAx data
        • Seamless connection to industrial and building automation via common bus systems
        • Support of comprehensive energy efficiency concepts thanks to integrated measuring functions
        3VA molded case circuit breaker interactive

        Discover the strengths of the 3VA molded case circuit breaker

        With the molded case circuit breaker, you’re always on the safe side: Reliable protection for increased system availability, higher transparency of energy flows, or selective tripping in case of a fault – this interactive graphics demonstrates all the benefits in detail.
        Downloads and Support

        Take advantage of our services

        Here you will find important information, documents, and addresses relating to low voltage power distribution and electrical installation technology.

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        Highlight projects

        Learn more about our 3VA molded case circuit breaker and its use in practice. 
        Klebs+Hartmann GmbH & Co. KG
        Ludwigshafen

        Transparency and efficiency in power distribution

        • Communication-capable 3VA2 molded case circuit breakers with integrated measuring function

        • Identification of energy saving potentials 

        • Reliable power monitoring system according to ISO 50001

        More
        Moritz J. Weig GmbH & Co. KG
        Mayen

        Simple collection of energy data

        • Communication-capable 3VA2 molded case circuit breakers with integrated measuring function

        • Direct detection of current, voltage, and power values within the device 

        • Easy connection to higher-level power monitoring and automation systems 

        More

        More information

        See for yourself. 3VA molded case circuit breakers.

        The modular, well-conceived, and highly variable system is suitable for all low-voltage power distribution applications in industry and infrastructure – and supports you in every phase of the engineering process.

        Find your 3VA molded case circuit breaker

        The system in the Industry Mall

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