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NF C63-068 ; NF EN 60947-8:2003-11-01
Low-voltage switchgear and controlgear - Part 8: control units for built-in thermal protection (PTC) for rotating electrical machines
Edition
2003-11-01
UNE-EN 50303
Group I, Category M1 equipment intended to remain functional in atmospheres endangered by firedamp and/or coal dust.
Edition
2001-12-31
UNE-EN 60947-8
Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines
Edition
2005-10-13
NF C63-068/A1 ; NF EN 60947-8/A1:2007-03-01
Low-voltage switchgear and controlgear - Part 8: control units for built-in thermal protection (PTC) for rotating electrical machines
Edition
2007-03-01
UNE-EN 60947-8/A1
Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines (IEC 60947-8:2003/A1:2006).
Edition
2007-06-27
NF C23-579-11 ; NF EN 60079-11:2012-03-01
Explosive atmospheres - Part 11: equipment protection by intrinsic safety "i"
Edition
2012-03-01
UNE-EN 60947-8/A2
Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines
Edition
2013-06-19
SN EN 60079-11
Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"
Edition
2012-01
NF C63-068/A2 ; NF EN 60947-8/A2:2012-11-01
Low-voltage switchgear and controlgear - Part 8: control units for built-in thermal protection (PTC) for rotating electrical machines
Edition
2012-11-01
UNE-EN 60079-11
Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"
Edition
2013-04-03
