IEC 60947-4-3:2020
Current
The latest, up-to-date edition.
Low-voltage switchgear and controlgear - Part 4-3: Contactors and motor-starters - Semiconductor controllers and semiconductor contactors for non-motor loads
Hardcopy , PDF
English, English - French
14-07-2020
IEC 60947-4-3:2020 applies to semiconductor controllers and semiconductor contactors for non-motor load intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V AC.
It covers their use:
– for operations of changing the state of AC electric circuits between the ON-state and the OFF-state;
– with or without bypass switching devices;
– as controller, for reducing the amplitude of the RMS AC voltage.
This third edition cancels and replaces the second edition published in 2014. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) scope exclusions;
b) editorial correction of notes and hanging paragraphs;
c) safety aspects related to:
- general aspects;
- limited energy circuits;
- electronic circuits;
d) mention of dedicated wiring accessories;
e) power consumption measurement;
f) alignment to IEC 60947-1:2020;
g) alignment with IEC 60947-4-2 when appropriate.
| Committee |
TC 121/SC 121A
|
| DocumentType |
Standard
|
| ISBN |
978-2-8322-8550-3
|
| Pages |
88
|
| PublisherName |
International Electrotechnical Committee
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| CEI EN IEC 60947-4-3:2025-02 | Identical |
| DS/EN IEC 60947-4-3:2024 | Identical |
| IS/IEC 60947 : PART 4 : Sec 3 : 2020 | Identical |
| DIN EN IEC 60947-4-3:2025-10 | Identical |
| PN-EN IEC 60947-4-3:2025-11 | Identical |
| VDE 0660-109:2025-10 | Identical |
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