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Appendix
A.1
Standards and approvals
Standards
The switch disconnectors of the 3KF series comply with the following international standards:
IEC 60947-3
EN 60947-3
EN 60947-1
EN 60947-1
GB 14048-3 (CCC)
EN 60947-1 Annex Q
IEC 60947-5-1
GB 14048-5-1
EN 60947-5
DIN 43880
EN 60715
DIN 46234
DIN 46235
DIN 46206-2
UL 508
UL508 for 3KF SITOR
The 3KF switch disconnector with SITOR fuses is certified according to UL508.
Because fuses for semiconductor protection according to UL fall under category Special
Purpose Fuses, the 3KF SITOR combined with SITOR fuses (if UL certified) can also be
used in the UL area, even though the fuses with LV HRC have a typical IEC design.
Users can, of course, install the switch disconnector in installations that are exported to the
USA.
3KF switch disconnectors with fuses
Manual, 09/2019, L1V30580914002A-01
Load break switches, disconnectors, switch disconnectors and fuse-combination units
Low-voltage switchgear and controlgear – Part 1: General rules
Switches, load break switches, disconnectors
Special tests – humidity, heat, salt spray, vibration and shock, category = E
Auxiliary switch
Built-in equipment for electrical installations; overall dimensions and related mounting dimen-
sions
Dimensions of low-voltage switchgear and controlgear
Standardized mounting on rails for mechanical support of electrical devices in switchgear and
controlgear installations
Cable lugs for solderless connections; ring type, without insulating sleeve, for copper conductors
Cable lugs for compression connections; cover plate type for copper conductors
Connections for electrical equipment; flat terminals >= 40 A, basic dimensions and assignment
Standard for Industrial Control Equipment
A
137
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