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EN IEC 60947-4-1:2019 - Low-voltage switchgear and controlgear - Part 4-1: Contactors and
IS/IEC 60947-4-1 (2000): Low-Voltage Switchgear and Controlgear, Part 4: Contractors and Motor-Starters, Section 1: Electromecha
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IS/IEC 60947-4-1: Low-Voltage Switchgear and Controlgear, Part 4: Contractors and Motor-Starters, Section 1: Electromechanical Contactors and Motors-Starters : Bureau of Indian Standards : Free Download, Borrow, and Streaming : Internet Archive
EN IEC 60947-1:2021 - Low-voltage switchgear and controlgear - Part 1: General rules
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