CAN/CSA C22.2 No.60947-5-1-2014(R2019) 低压开关设备和控制设备 第5-1部分:控制电路装置和开关元件 机电控制电路装置(双国标准 符合 UL 60947-5-1)
Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and switching elements - Electromechanical control circuit devices (Bi-national standard, with UL 60947-5-1)