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IEC 60947-3-ed.4.0
Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units
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STANDARD published on 22.4.2020
The information about the standard:
Designation standards: IEC 60947-3-ed.4.0
Publication date standards: 22.4.2020
SKU: NS-992366
Approximate weight : 300 g (0.66 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Annotation of standard text IEC 60947-3-ed.4.0 :
IEC 60947-3:2020 applies to switches, disconnectors, switch-disconnectors and fuse-combination units and their dedicated accessories to be used in distribution circuits and motor circuits of which the rated voltage does not exceed 1 000 V AC or 1 500 V DC. This fourth edition cancels and replaces the third edition published in 2008, Amendment 1:2012 and Amendment 2:2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - addition of critical load current tests for DC switches (see 9.3.9); - addition of requirements for a conditional short-circuit rating for disconnectors, switches, and switch-disconnectors protected by circuit-breakers (see 9.3.7.2); - addition of new categories for high-efficiency motors switching (see Annex A); - addition of new Annex E for connection to aluminium conductors; - addition of new Annex F for power losses measurement. The contents of the corrigendum of October 2021 have been included in this copy. L’IEC 60947-3:2020 s’applique a l’appareillage suivant: interrupteurs, sectionneurs, interrupteurs-sectionneurs, combines-fusibles et leurs accessoires dedies, destines a etre inseres dans des circuits de distribution et des circuits de moteurs dont la tension assignee est inferieure ou egale a 1 000 V en courant alternatif ou a 1 500 V en courant continu. Cette quatrieme edition annule et remplace la troisieme edition parue en 2008, l’Amendement 1:2012 et l’Amendement 2:2015. Cette edition constitue une revision technique. Cette edition inclut les modifications techniques majeures suivantes par rapport a l’edition precedente: - ajout dessais de courant critique de charge pour interrupteurs a courant continu (voir 9.3.9); - ajout d’exigences relatives a la caracteristique assignee de court-circuit conditionnel pour les sectionneurs, les interrupteurs et les interrupteurs-sectionneurs proteges par des disjoncteurs (voir 9.3.7.2); - ajout de nouvelles categories pour commande de moteurs a haut rendement (voir Annexe A); - ajout d’une nouvelle Annexe E pour le raccordement a des conducteurs en aluminium; - ajout d’une nouvelle Annexe F pour la mesure des puissances dissipees. Le contenu du corrigendum d’octobre 2021 a ete pris en consideration dans cet exemplaire.
These changes apply to this standard:
IEC 60947-3-ed.4.0/Amd.1
Change
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Amendment 1 - Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units
(Amendement 1 - Appareillage a basse tension - Partie 3: Interrupteurs, sectionneurs, interrupteurs-sectionneurs et combines-fusibles)
Change published on 25.4.2025
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These corrections apply to this standard:
IEC 60947-3-ed.4.0/Cor.1
Correction
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Corrigendum 1 - Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units
(Corrigendum 1 - Appareillage a basse tension - Partie 3: Interrupteurs, sectionneurs, interrupteurs-sectionneurs et combines-fusibles)
Correction published on 22.10.2021
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