E1 M1 C1 Presentation_en[1]

x x x x x x

x Standard Electrical endurance x Low Very low

Class E1/E2*, M2, C2 M0 E2

1,000 CO 2,000 CO 10,000 CO

x x

0C Isc 2C Isc 5C Isc x

x x x

IEC publication 62271-102 Disconnector/earthing device

x 2,000 CO 10,000 CO

IEC publication 62271-100 Circuit-breaker

*) E2 if the CB is not for autoreclosing.

Examples: MMS circuit-breaker MMS disconnector MMS earting device

C = Closing, O = Opening

Mechanical endurance M0 M1 M2 Electrical endurance E0 E1 E2 E3 Restrike probability C1 C2

Class

Classes of switchgear