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SF6 Gas-Insulated Circuit Breakers

24–36 kV
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Applications

EFG brand SF₆ gas-insulated circuit breakers are used for switching and protection in high-voltage air-insulated switchgear. They open and close the electrical circuit under normal operating conditions or in the event of a fault. 

  • High-voltage air-insulated switchgear 
  • Electric power distribution systems 
  • Substations 
  • Industrial facilities 
  • Power generation and distribution facilities 
  • High-voltage switching systems 

Benefits

  • Combines switching and protection functions 
  • Uses SF₆ gas as an arc-quenching and insulating medium 
  • Product options for 24 kV and 36 kV systems 
  • 630 A rated current 
  • Short-circuit withstand capability 
  • Design that can be integrated into modular metal-enclosed switchgear 
  • Design compliant with the IEC 62271-100 standard 

Technical Specifications

Specification  ARM-36-G-01  ARM-24-G-01 
Rated Voltage  36 kV  24 kV 
Insulation Voltage  70 kV  50 kV 
Lightning Impulse Withstand Voltage  170 kV  125 kV 
Rated Current  630 A  630 A 
Rated Frequency  50 Hz  50 Hz 
Short-Circuit Withstand Capacity  16 kA  16 kA 
Peak Withstand Current  40 kA  40 kA 
Short-Circuit Duration  3 sec.  3 sec. 
Operating Cycle  A-0.3 sec-KA-3 min-KA  A-0.3 sec-KA-3 min-KA 
Class  E2, C1, M2  E2, C1, M2 
Applicable Standard  IEC 62271-100  IEC 62271-100 
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