BS EN IEC 60947-4-1:2019 Low-voltage switchgear and controlgear Contactors and motor-starters. Electromechanical contactors and motor-starters - European Standards
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IEC 60947-4-3 Amd.1 Ed. 1.0 b:2006 - Amendment 1 - Low-voltage switchgear and controlgear - Part 4-3: Contactors and motor-starters - AC semiconductor controllers and contactors for non-motor loads
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IEC 60947-4-2 Ed. 4.0 b:2020, Fourth Edition: Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-starters – Semiconductor motor controllers, starters and soft-starters: International Electrotechnical Commission: 9782832284513 ...
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