Vacuum Contactors

Primary Distribution

Vacuum Contactors

The motor and capacitor switching solution

ABB’s medium voltage contactors are suitable for controlling electrical loads of motors, transformers and capacitor banks. Thanks to the breaking technology with vacuum interrupters, ABB’s medium voltage contactors can operate in particularly difficult environments from -30°C up to 55°C.  


ABB’s medium voltage contactors are available for original equipment manufacturers (OEM), panel builders and Engineering, Procurement and Construction (EPCs) and end users to incorporate in their own installations or for use in repair, retrofit and upgrade projects. 

ABB supports customers and partners in staying ahead of increasing electrification needs, technology, and regulatory changes, providing the power to adapt to a rapidly evolving energy landscape. 
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ABB's portfolio for Vacuum Contactors



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TECHNICAL FEATURES

✓ Rated voltage: up to 12 kV
✓ Rated current: up to 400 A
✓ Rated short circuit current:
    up to 6 kA unfused; 50 kA with SCPD
    (normal fuses)

ConVac: Reliable and flexible solution for industries, utility, service-providers and marine sectors

 

ConVac is ABB’s medium voltage vacuum contactor platform up to 12 kV. If equipped with the correct fuses, ConVac can also guarantee protection with a fault level up to 50 kA. ConVac is suitable for applications that require a high number of operations and/or a very high switching frequency, such as: 

  • Three-phase motors AC-3 or AC-4 class according to IEC standards and E1 and E2 class according UL/CSA standard (7.2 kV freestanding only)
  • Capacitors: single and back-to-back application according to IEC 62271-106 and IEEE C39.09a 
  • Transformers: small footprint, flexible and user-friendly solution for switching. 

    Benefits

    • Fast answer to customer change in specification
    • Flexible installation and easy connections
    • Easy to customize, reduce up to 80% customization time
    • Reduced engineering needs
    • Optimized panel dimensions and cost
    • Operative in extreme conditions

     

    Applications

    • Industrial facilities (manufacturing, processing plants)
    • Utilities (power generation and distribution)
    • Service-providing sectors (e.g., data centers, hospitals)
    • Shipbuilding and marine applications
    • Renewable energy installations
    • Mining and metallurgy
    • Oil & gas and chemical industries

     


Product scope

Click the arrow to learn more about product scope.
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ConVac
IEC 

UL/CSA standards

Rated voltage 
up to 12 kV 
up to 7.2 kV 
Rated current
up to 400 A 
up to 400-800 A 
Rated short circuit current 
up to 6 kA unfused; 50 kA with fuses 
up to 6-12.5 kA unfused; 50 kA with fuses 
Technology 
Vacuum 
Vacuum 
Operating mechanism 
Electrical or mechanical latching 
Electrical or mechanical latching 
Mechanical operations 
1 million cycles 
1 million cycles 
Standards 
IEC 62271-106 
UL 347 and CSA C22.2 
Industries 
Industry, utility, service-providers and marine 
Industry, utility, service-providers 

Customer benefits

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Maximize your result

  • Easy to install and customize
  • All electrical connections are plug-and socket with integrated terminal box saving up to 40% of wiring time
  • Plug-in accessories to reduce the customization time up to 80% 

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Optimize logistic

  • One single freestanding unit conforming to IEC, UL and CSA standards at 7.2 kV 400 A
  • Plug-in accessories to reduce the customization time up to 80%, which are also common for 7.2 and 12 kV units 

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Optimize investments

  • Freestanding units allow panel design optimization and lower development efforts thanks to: common platform between ConVac 7 400 A and ConVac 12 - same fixing and terminals position  flexible installation position  
  • Draw-out units provided with a full range of accessories, including units self-supplied by an on-board VT 

Configure your vacuum contactor



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FAQ

1. What is a medium voltage vacuum contactor? 
A vacuum contactor is a mechanical switching component capable of making, carrying and breaking currents under normal circuit conditions including operating overload conditions. Contactors are not capable of switching and withstanding short-circuit currents and must therefore be adequately protected. ABB ConVac vacuum contactor has a stable hold position (open position). 
2. How does ConVac medium voltage vacuum contactor work? 
Contactors differ from the other switching component categories as they normally have a stable hold position (open position) while the alternative position (closed position) is maintained by an auxiliary power supply or, in certain cases, by a mechanical latch. Since contactors are not meant for short-circuit current interruption, they are able to provide a very high number of mechanical and electrical operating sequences to be engineered. 
3. Are ABB’s medium voltage vacuum contactor easy to maintain?
Thanks to the optimized structure and the high reliability of our solutions, ABB’s ConVac is characterized by a long service lifetime with limited interventions aiming to ensure trouble-free operation of the apparatus for the longest possible time. During the entire service life, ConVac needs very limited maintenance, and the vacuum interrupters are maintenance free. 
4. Are ABB’s medium voltage vacuum contactor customizable for specific needs? 
ConVac has flexible installation positions. Multiple installations are possible depending on the application needs, such as forward or backward wiring easier for main circuit design and set up, and optimized connection routes to use less material.

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