77th Edition, January 31, 1977
Switchgear and Controlgear for Voltages up to and Including 1000V a.c. and 1200V d.c. Part 1: Circuit-Breakers
Includes all amendments and changes through Reaffirmation Notice , April 15, 1990
Superseded By: BS EN 60947-2
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Description / Abstract:
Definitions, classification, rated values, service conditions, tests. Includes moulded case circuit-breakers, and circuit-breakers with integral or separate fuses.