NATIONAL FOREWORD

This Indian Standard (Part 1) (Second Revision) which is identical with IEC 61008-1 : 2012 ‘Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCBs) - Part 1: General Rules’ issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on the recommendation of the Low Voltage Switchgear and Controlgear Sectional Committee and approval of the Electrotechnical Division Council..

This standard was first published in 2000. First revision was undertaken to align it with IEC 61008-1 : 1996 along with Amendment Nos. 1 and 2 published in the year 2002 and 2006 respectively. This revision has been undertaken to align it with IEC 61008-1 : 2012 Ed. 3.1, which consists of IEC 61008-1 : 2010 (Ed.3.0) and its Amendment 1 (2012).

The text of IEC Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker.