NEMA SG 4-1990
Alternating-Current High-Voltage Circuit Breakers
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NEMA SG 4-1990
Standard No.
NEMA SG 4-1990
Release Date
1990
Published By
NEMA - National Electrical Manufacturers Association
Status
Be replaced
2009-06
Replace By
NEMA SG 4-2000
Latest
NEMA SG 4-2009
NEMA SG 4-1990 history
2009
NEMA SG 4-2009
Alternating Current High-Voltage Circuit Breakers
2000
NEMA SG 4-2000
Alternating-Current High-Voltage Circuit Breakers
1990
NEMA SG 4-1990
Alternating-Current High-Voltage Circuit Breakers
1975
NEMA SG 4-1975
ALTERNATING-CURRENT HIGH- VOLTAGE CIRCUIT BREAKERS; REVISION 1 - NOVEMBER 1977@ EDITORIAL CORRECTION TO REVISION 1 - DECEMBER 1977 (WITHDRAWN)
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