IEEE-C37.20.1-PDF › Complete Document History
IEEE Standard for Metal-Enclosed Low-Voltage (1000 Vac and below, 3200 Vdc and below) Power Circuit Breaker Switchgear

Complete Current Edition:
   2015 EDITION - PDF FORMAT FORMAT - July 13, 2015

Obsolete Revision Information:
   2002 EDITION - IEEE STANDARD FOR - Oct. 10, 2002
   1993 R98 EDITION - REAFFIRMED IN 1998 - Jan. 1, 1998
   1993 EDITION - STANDARD FOR METAL-ENCLOSED - Jan. 1, 1993
   1987 EDITION - METAL-ENCLOSURES LOW-VOLTAGE POWER CIRCUIT BREAKERS SWITCHGE - Feb. 1, 1987