Escolha sua região e idioma



Live Tank Circuit Breaker Type EDF SK 1-1 up to 72.5 kV

Well proven circuit breaker based on established design, assembled and tested for rapid installation

The EDF SK is a live tank SF6 Auto-Puffer™ circuit breaker. It has a proven design and long performance in a vast range of environments and ambient conditions with an installed base in over 80 countries. The EDF breaker is type-tested to stringent conditions as per IEC standard for high voltage circuit breakers, IEC 62271-100.


  • Switching of Transmission Lines
  • Switching of Transformers 
  • Switching of Capacitor banks
  • Switching of Reactors

Why Hitachi Energy?

  • Proven self-blast technology with low energy requirement  
  • Superior switching capability – Class C2 & S2 as per IEC 
  • Proven performance in extreme temperatures, from -30 °C to +50 °C
  • Compact design and easy installation
  • High seismic capability due to optimized pole and structure design
  • Global service organization, local everywhere 

Brief performance data

LTB Type      EDF SK 1-1 
Rated voltage kV 52 72.5
Frequency Hz 50-60 50-60
Rated continuous current A 2500 2500
Rated short circuit breaking current kA 31.5 31.5
Lightning Impulse Withstand Voltage kV 250 325

Something caught your eye?

Our sales team will get in touch with you