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      • Moulded case circuit breakers 3VA
        • Moulded case circuit breakers and switch-disconnectors up to 1250 A
        • Moulded case circuit breakers and switch-disconnectors up to 1600 A
      • Air circuit breakers Arion
        • accessories - delivered separately
      • Air circuit breakers 3WA
        • Air circuit breakers size 1 up to 2500 A
        • Air circuit breakers size 1 up to 4000 A
        • Air circuit breakers size 1 up to 6000 A
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        • accessories - delivered separately
      • Fuse systems Varius
        • Fuse switch-disconnectors, fuse disconnectors and fuse holders for cylindrical fuse-links
        • Fuse switch-disconnectors
        • Fuse switch-disconnectors - vertical design and fuse-rails
        • HRC fuse-links
        • Fuse-links for semiconductor protection
        • Fuse-bases and fuse holders
        • MV fuses
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        • Enclosures DistriTon
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        • Moulded case circuit breakers
        • Power monitoring devices
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      Categories
      • Modular devices Minia
        • MiniaMini - 1 module 1N devices
        • Miniature circuit breakers
        • Residual current circuit breakers with overcurrent protection
        • Residual current circuit breakers
        • Arc fault detection devices
        • Overvoltage protections
        • Switching devices
        • Motor starters
        • Other devices
      • Moulded case circuit breakers 3VA
        • Moulded case circuit breakers and switch-disconnectors up to 1250 A
        • Moulded case circuit breakers and switch-disconnectors up to 1600 A
      • Air circuit breakers Arion
        • accessories - delivered separately
      • Air circuit breakers 3WA
        • Air circuit breakers size 1 up to 2500 A
        • Air circuit breakers size 1 up to 4000 A
        • Air circuit breakers size 1 up to 6000 A
        • Switch-disconnectors
        • accessories - delivered separately
      • Fuse systems Varius
        • Fuse switch-disconnectors, fuse disconnectors and fuse holders for cylindrical fuse-links
        • Fuse switch-disconnectors
        • Fuse switch-disconnectors - vertical design and fuse-rails
        • HRC fuse-links
        • Fuse-links for semiconductor protection
        • Fuse-bases and fuse holders
        • MV fuses
      • Enclosures and switchboard cabinets Distri
        • Enclosures DistriTon
        • Enclosures DistriSet
        • Switchboard cabinets DistriBox
        • Busbar systems
      • Products for measuring and communication
        • Moulded case circuit breakers
        • Power monitoring devices
      • Other products
        • Automatic standby units
      • Former manufactured devices
    • Former manufactured devices
      Former manufactured devices

      Search for previously manufactured devices

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  • Technical and software support
    • Technical support
      Technical support

      OEZ Technical support

      We provide technical support for our products and services. Extensive technical information on products and systems, manuals, manuals and 3D drawings can be found in our product section of the site. In case of further technical questions, contact our technical support staff.

      More
    • Software support
      Software support

      OEZ Software support

      Our company systematically updates the software support of its products. The Sichr calculation program and the OEZ Configurator were expanded and updated. You will also find a new version of the OEZ-CAD drawing set and updated databases for design programs. We also did not forget to support e-shops.

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    • 3VA moulded case circuit breakers
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  • Products profiles
    • Categories
      • Modular devices Minia
        • MiniaMini - 1 module 1N devices
        • Miniature circuit breakers
        • Residual current circuit breakers with overcurrent protection
        • Residual current circuit breakers
        • Arc fault detection devices
        • Overvoltage protections
        • Switching devices
        • Motor starters
        • Other devices
      • Moulded case circuit breakers 3VA
        • Moulded case circuit breakers and switch-disconnectors up to 1250 A
        • Moulded case circuit breakers and switch-disconnectors up to 1600 A
      • Air circuit breakers Arion
        • accessories - delivered separately
      • Air circuit breakers 3WA
        • Air circuit breakers size 1 up to 2500 A
        • Air circuit breakers size 1 up to 4000 A
        • Air circuit breakers size 1 up to 6000 A
        • Switch-disconnectors
        • accessories - delivered separately
      • Fuse systems Varius
        • Fuse switch-disconnectors, fuse disconnectors and fuse holders for cylindrical fuse-links
        • Fuse switch-disconnectors
        • Fuse switch-disconnectors - vertical design and fuse-rails
        • HRC fuse-links
        • Fuse-links for semiconductor protection
        • Fuse-bases and fuse holders
        • MV fuses
      • Enclosures and switchboard cabinets Distri
        • Enclosures DistriTon
        • Enclosures DistriSet
        • Switchboard cabinets DistriBox
        • Busbar systems
      • Products for measuring and communication
        • Moulded case circuit breakers
        • Power monitoring devices
      • Other products
        • Automatic standby units
      • Former manufactured devices
      Categories
      • Modular devices Minia
        • MiniaMini - 1 module 1N devices
        • Miniature circuit breakers
        • Residual current circuit breakers with overcurrent protection
        • Residual current circuit breakers
        • Arc fault detection devices
        • Overvoltage protections
        • Switching devices
        • Motor starters
        • Other devices
      • Moulded case circuit breakers 3VA
        • Moulded case circuit breakers and switch-disconnectors up to 1250 A
        • Moulded case circuit breakers and switch-disconnectors up to 1600 A
      • Air circuit breakers Arion
        • accessories - delivered separately
      • Air circuit breakers 3WA
        • Air circuit breakers size 1 up to 2500 A
        • Air circuit breakers size 1 up to 4000 A
        • Air circuit breakers size 1 up to 6000 A
        • Switch-disconnectors
        • accessories - delivered separately
      • Fuse systems Varius
        • Fuse switch-disconnectors, fuse disconnectors and fuse holders for cylindrical fuse-links
        • Fuse switch-disconnectors
        • Fuse switch-disconnectors - vertical design and fuse-rails
        • HRC fuse-links
        • Fuse-links for semiconductor protection
        • Fuse-bases and fuse holders
        • MV fuses
      • Enclosures and switchboard cabinets Distri
        • Enclosures DistriTon
        • Enclosures DistriSet
        • Switchboard cabinets DistriBox
        • Busbar systems
      • Products for measuring and communication
        • Moulded case circuit breakers
        • Power monitoring devices
      • Other products
        • Automatic standby units
      • Former manufactured devices
    • Former manufactured devices
  • Technical and software support
    • Technical support
      Technical support

      OEZ Technical support

      We provide technical support for our products and services. Extensive technical information on products and systems, manuals, manuals and 3D drawings can be found in our product section of the site. In case of further technical questions, contact our technical support staff.

      More
    • Software support
      • Computational program Sichr
      • Configurator OEZ
      • Power monitoring device
      • 3D models
      • Eplan P8
      • OEZ CAD Menu
  • Downloads
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    • ROHS - statement
    • Request for a documentation supply
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    • About the company
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      • Industry
      • Infrastructure
    • Sustainability and Corporate Social Responsibility
    • Certification
    • Invoicing data
    • General terms and conditions
  • Contact Us
  • Blue planet
OEZ (https://www.oez.com/)

General terms and conditions

  • pdf Sanction regulations Download
  • pdf Storage conditions Download
  • pdf Transport conditions Download
  • pdf Guarantee period and Claims Download
  • PDF General terms and condition OEZ export Download
  • pdf Code of Conduct for Suppliers of Siemens concern and Third Party Intermediaries Download
  • pdf Terms and Conditions for Orders goods of Siemens concern Download
  • pdf Terms and Conditions for Orders commercial goods of Siemens concern Download
  • pdf Terms and Conditions for making a work in Siemens Concerns Download
  • pdf Terms and Conditions for Siemens Services Download

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  • 3va moulded case circuit breakers

Products profiles

  • Minia - Modular devices Minia
  • 3VA - Moulded case circuit breakers
  • Modeion - Moulded case circuit breakers
  • Arion - Air circuit breakers Arion
  • Varius - Fuse systems Varius
  • Distri - Enclosures and switchboard cabinets
  • Other products
  • Former manufactured devices

Software support

  • Computational program Sichr
  • Configurator OEZ
  • CAD/CAE
  • Power monitoring device

Technical support

  • Technical support

Downloads

  • Documents
  • Request for a documentation supply

About the company

  • About us
  • Historical
  • Company management
  • References
  • Certification
  • General terms and conditions

Company OEZ

Our brand represents a company with over 75 years of tradition in the development and production of low-voltage breaking devices. OEZ is a complex supplier of products and services in the field of the low-voltage electrical circuits.

Contact us

OEZ s.r.o.
Šedivská 339
561 51 Letohrad
T: +420 465 672 111
Purchasing
T: +420 465 672 503


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