IEC 60337-1A:1973
Superseded
First supplement - Control switches (low-voltage switching devices for control and auxiliary circuits, including contactor relays) - Part 1: General requirements
Hardcopy , PDF
English - French, Russian
01-01-1973
12-01-1990
Gives additional requirements for control switches having a positive opening operation and control switches with positive opening operation and isolating properties.
| Committee |
TC 62
|
| DocumentType |
Standard
|
| Pages |
11
|
| PublisherName |
International Electrotechnical Committee
|
| Status |
Superseded
|
| Standards | Relationship |
| HD 420 : 200S2 | Identical |
| BS 4794-1:1979 | Identical |
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