IEEE C37.4thru9 : 1945
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
American Standards for Alternating Current Power Circuit Breakers
Hardcopy , PDF
10-01-2020
English
16-05-1945
These standards apply to all indoor and outdoor types of alternating-current power circuit breakers rated in excess of 600 volts.
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