IEC 60439-1 Ed. 4.1 b:2004

Applies to low-voltage switchgear and controlgear assemblies (type-tested assemblies (TTA) and partially type-tested assemblies (PTTA)), the rated voltage of which does not exceed 1 000 V a.c. at frequencies not exceeding 1 000 Hz, or 1 500 V d.c. The contents of the corrigendum of November 2004 have been included in this copy. This consolidated version consists of the fourth edition (1999) and its amendment 1 (2004). Therefore, no need to order amendment in addition to this publication.