OVE/ONORM EN 60947-4-3:2012被替代
Low-Voltage Switchgear And Controlgear - Part 4-3: Contactors And Motor-Starters - Ac Semiconductor Controllers And Contactors For Non-Motor Loads (Iec 60947-4-3:1999 + A1:2006 + A2:2011)
出版：Osterreichisches Normungsinstitut
专家解读视频
