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What does Internal Arc Classification A-F, A-FL and A-FLR mean?
Internal Arc Classification IAC A-F, A-FL and A-FLR are defined in IEC 62217-200 and help to define internal arc performance of medium voltage or high voltage switchgear.

The following definitions are described as:
  • A   switchgear installation in rooms with access for authorized personnel, closed electrical service location
  • A-F  switchgear front (F-front) only protection for users
  • A-FL  switchgear front and side (F-front, L-lateral) protection for users
  • A-FLR  all sided switchgear (F-front, L-lateral, R-rear) protection for users
  • Ringmaster has A-F or A-FLR designation
  • GenieEvo has A-F or A-FLR designation
  • MCset has A-FL or A-FLR designation
For more information on MV switchgear installation conditions with respect to Internal Arc Classification please visit Schneider web page .

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