GB/T 14048.4-2020低压开关设备和控制设备第4-1部分:接触器和电动机起动器机电式接触器和电动机起动器(含电动机保护器)标准
英文:Low-voltage switchgear and controlgear—Part 4-1: Contactors and motor-starters—Electromechanical contactors and motor...
英文:Low-voltage switchgear and controlgear—Part 4-1: Contactors and motor-starters—Electromechanical contactors and motor...