ABB RET630 IEC Transformer protection and control Numerical Relay


Adopts high-performance industrial-grade processor

Adopt high-performance industrial-grade wireless module

4G full network communication (Unicom, Telecom, Mobile)

Support low power consumption mode

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ABB RET630 IEC Transformer protection and control Numerical Relay

ABB RET630 IEC is a comprehensive transformer management relay for the protection, control, measurement and supervision of power transformers, including step-up transformers, and power generator-transformer units in utility and industrial power distribution systems. RET630 is also ideal for transformer bay control.


RET630 has been designed to be the main protection and offer full protection for two-winding power transformers

Product benefits

  • Freely configurable functionality to meet application specific requirements
  • Extensive functionality and scalable hardware for the most demanding applications
  • All-in-one solution with integration of protection, control, monitoring and supervision in one relay
  • Large integrated or detached HMI with user configurable push buttons, making it easy to use
  • Extensive life-cycle services

Product features

  • Transformer differential protection, thermal overload protection, voltage protection, and hot spot and aging rate monitoring
  • Optional automatic voltage regulation of power transformers with a motor driven on-load tap-changer
  • 8 RTD/mA inputs and 4 mA outputs
  • Supports native IEC 61850 Edition 1, including GOOSE messaging for less wiring and supervised communication
  • Supports DNP3 (TCP/IP) and IEC 60870-5-103

The 630 protection and control series of relays is a member of ABB’s Relion® product family. The 630 series relays are characterized by their functional scalability and flexible configurability.