Reaffirmed 2023

NATIONAL FOREWORD

This Indian Standard (Part 4/Sec 1) (Second Revision) which is identical with IEC 60947-4-1 : 2018 ‘Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters - Electromechanical contactors and motorstarters’ 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 as IS 13947 (Part 4/ Sec 1) : 1993 and was identical to IEC 60947-4-1 : 2000. This standard was then superseded by IS/IEC 60947 (Part 4/Sec 1) : 2000 which was identical to IEC 60947-4-1 : 2000 with Amendment No. 1 (2002) and Technical Corrigendum 1 (2001). First revision of IS/IEC 60947 (Part 4/Sec 1) : 2000 was undertaken in 2018 which was identical to IEC 60947-4-1 : 2012. This second revision has now been undertaken to align this standard with the latest international practices.