IEC 60947-3:2020
Current
The latest, up-to-date edition.
Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units
Hardcopy , PDF
English - French, Spanish, Castilian
22-04-2020
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.
| Committee |
TC 121/SC 121A
|
| DocumentType |
Standard
|
| ISBN |
978-2-8322-8153-6
|
| Pages |
245
|
| ProductNote |
THIS STANDARD ALSO REFERS TO IEC 60417,IEC 60617
|
| PublisherName |
International Electrotechnical Committee
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| CEI EN IEC 60947-3:2021 | Identical |
| IS/IEC 60947 : PART 3 : 2020 | Identical |
| VDE 0660-107:2021-09 | Identical |
| DIN EN IEC 60947-3:2021-09 | Identical |
| EN IEC 60947-3:2021 | Identical |
| DS/EN IEC 60947-3:2021 | Identical |
| CEI EN IEC 60947-3:2025-04 | Identical |
| I.S. EN IEC 60947-3:2021 | Identical |
| UNE-EN IEC 60947-3:2022 | Identical |
| BS EN IEC 60947-3:2021 | Identical |
| I.S. EN IEC 60947-3:2021&A1:2025 | Identical |
| CEI EN IEC 60947-9-2:2025-08 | Low-voltage switchgear and controlgear – Part 9-2: Active arc-fault mitigation systems - Optical-based internal arc-detection and mitigation devices |
Please Login or Create an Account so you can add users to your Multi user PDF Later.
Important note : All end users must be registered with an Account prior to user licenses being assigned.
Users cannot be edited or removed once added to your Multi user PDF.