e1 m1 c1 presentation_en[1]

1
Classes of switchgear Class IEC publication 62271-100 IEC publication 62271-102 Circuit-breaker Disconnector/earthing device Mechanical endurance M0 x 1,000 CO x M1 2,000 CO 2,000 CO x M2 10,000 CO 10,000 CO x Electrical endurance E0 x x 0C Isc E1 Standard x 2C Isc E2 Electrical endurance x 5C Isc E3 x x x Restrike probability C1 Low x x C2 Very low x x C = Closing, O = Opening Examples: Class MMS circuit-breaker E1/E2*, M2, C2 MMS disconnector M0 MMS earting device E2 *) E2 if the CB is not for autoreclosing.

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Page 1: E1 M1 C1 Presentation_en[1]

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