IEC 60947-4-3 Ed. 1.1 b:2007

This part of IEC 60947 applies to a.c. semiconductor non-motor load controllers and contactors intended for performing electrical operations by changing the state of a.c. electric circuits between the ON-state and the OFF-state. Typical applications are given in table 2. This standard shall be used in conjunction with IEC 60947-1. This consolidated version of IEC 60947-4-3 is based on the first edition (1999) its amendment 1 (2006) and its corrigendum of May 2000. It bears the edition number 1.1. A vertical line in the margin shows where the base publication has been modified by amendment 1.