UNE-EN 60947-4-1:2011/A1:2013 Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters - Electromechanical contactors and motor-starters
2013UNE-EN 60947-4-1:2011/A1:2013 Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters - Electromechanical contactors and motor-starters
2011UNE-EN 60947-4-1:2011 Low-voltage switchgear and controlgear -- Part 4-1: Contactors and motor-starters - Electromechanical contactors and motor-starters