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Protection and control REX640

All-in-one protection for any power distribution application


REX640 makes protecting all your assets in advanced power generation and distribution applications easy. The fully modular design allows unequaled customization and modification flexibility, and easy adaptation to changing protection requirements throughout the relay life cycle. This is asset management at its best.

As the newest member of ABB’s Relion® protection and control family of relays, REX640 further reinforces Relion’s position as the range of relays to rely on.

REX640 – innovative, flexible and easy to use

  • Complete application coverage with one device for optimal flexibility and cost-effectivenes
  • Ready-made application packages for convenient and smooth ordering
  • Customization freedom with modular and scalable design
  • Fully modular hardware and software for maximum flexibility throughout the entire relay life cycle
  • Easy adaption to changing protection requirements
  • Continuous access to the latest software and hardware developments
  • Ready-made application-based LHMI pages – saving both time and efforts
  • Increased situational awareness and optimal usability with application-driven LHMI
  • Designed to support the increasing digitalization of substations

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