IEC 60364-4-43:2008
Low-voltage electrical installations - Part 4-43: Protection for safety - Protection against overcurrent

Standard No.

IEC 60364-4-43:2008

Release Date

2008

Published By

International Electrotechnical Commission (IEC)

Status

Be replaced

Replace By

IEC 60364-4-43:2008/COR1:2008

Latest

IEC 60364-4-43:2023

Replace

IEC 64/1641/FDIS:2008 IEC 60364-4-43:2001 IEC 60364-4-43 Corrigendum 1:2002

Scope

This part of IEC 60364 provides requirements for the protection of live conductors from the effects of overcurrents. This standard describes how live conductors are protected by one or more devices for the automatic disconnection of the supply in the event of overload (Clause 433) and short-circuit (Clause 434) except in cases where the overcurrent is limited in accordance with Clause 436 or where the conditions described in 433.3 (omission of devices for protection against overload) or 434.3 (omission of devices for protection against short-circuit) are met. Coordination of overload protection and short-circuit protection is also covered (Clause 435). NOTE 1 Live conductors protected against overload in accordance with Clause 433 are considered to be protected also against faults likely to cause overcurrents of a magnitude similar to overload currents. NOTE 2 The requirements of this standard do not take account of external influences, NOTE 3 Protection of conductors according to this standard does not necessarily protect the equipment connected to the conductors. NOTE 4 Flexible cables connecting equipment by plugs and socket-outlet to fixed installations are not part of the scope of this standard and for this reason are not necessarily protected against overcurrent. NOTE 5 Disconnection does not mean isolation in this standard.

IEC 60364-4-43:2008 Referenced Document

• IEC 60269-2 Low-voltage fuses - Part 2: Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial application) - Examples of standardized systems of fuses A to K*， 2016-08-01 Update
• IEC 60269-3 Low-voltage fuses - Part 3: Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household or similar applications) - Examples of standardized systems of fuses A to F CONSOLIDATED EDITION*， 2019-06-11 Update
• IEC 60269-4 Low-voltage fuses - Part 4: Supplementary requirements for fuse-links for the protection of semiconductor devices*， 2016-08-01 Update
• IEC 60364-5-52:2001 Electrical installations of buildings - Part 5-52: Selection and erection of electrical equipment; Wiring systems
• IEC 60439-2 Low-voltage switchgear and controlgear assemblies - Part 2: Particular requirements for busbar trunking systems (busways)
• IEC 60724 Short-circuit temperature limits of electric cables with a rated voltage of 1 kV (U<(Index)m> = 1,2 kV) and 3 kV (U<(Index)m> = 3,6 kV)*， 2008-11-01 Update
• IEC 60898 Electrical accessories - Circuit-breakers for overcurrent protection for household and similar installations
• IEC 60947-2 Low-voltage switchgear and controlgear - Part 2: Circuit-breakers
• IEC 60947-3 Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units; Corrigendum 1*， 2021-10-01 Update
• IEC 60947-6-2 Corrigendum 2 - Low-voltage switchgear and controlgear - Part 6-2: Multiple function equipment - Control and protective switching devices (or equipment) (CPS)*， 2023-06-06 Update
• IEC 61009 Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBO's); part 2.2: applicability of the general rules to RCBO's functionally dependent on line voltage
• IEC 61534 Powertrack systems - Part 22: Particular requirements for powertrack systems intended for onfloor or underfloor installation*， 2021-01-01 Update
• IEC Guide 104 The preparation of safety publications and the use of basic safety publications and group safety publications*， 2019-07-24 Update

IEC 60364-4-43:2008 history

• 2023 IEC 60364-4-43:2023 Low-voltage electrical installations - Part 4-43: Protection for safety - Protection against overcurrent
• 2008 IEC 60364-4-43:2008/COR1:2008 Low-voltage electrical installations - Part 4-43: Protection for safety - Protection against overcurrent
• 2008 IEC 60364-4-43:2008 Low-voltage electrical installations - Part 4-43: Protection for safety - Protection against overcurrent
• 1970 IEC 60364-4-43:2001/COR1:2002 Corrigendum 1 - Electrical installations of buildings - Part 4-43: Protection for safety - Protection against overcurrent
• 2001 IEC 60364-4-43/COR1:2001 Electrical Installations of Buildings - Part 4-43: Protection for Safety - Protection Against Overcurrent CORRIGENDUM 1 (Edition 2.0)
• 2001 IEC 60364-4-43:2001 Electrical installations of buildings - Part 4-43: Protection for safety; Protection against overcurrent
• 1970 IEC 60364-4-43:1977/AMD1:1997 Amendment 1 - Electrical installations of buildings. Part 4: Protection for safety. Chapter 43: Protection against overcurrent
• 1977 IEC 60364-4-43/AMD1:1977 Amendment 1 Electrical installations of buildings - Part 4: Protection for safety - Chapter 43: Protection against overcurrent (Edition 1.0)
• 1977 IEC 60364-4-43:1977 Electrical installations of buildings. Part 4 : Protection for safety. Chapter 43 : Protection against overcurrent