automatic disconnection of supply meaning in English

自动切断电源

electrical installation guide-part 413 : protection against indirect contact-automatic disconnection of supply
电气安装导则.第413部分:间接接触的防护.电源自动切断装置
erection of low voltage installations-permissible current-carrying capacities, protection against overload, permissible lengths of cables and cords taking into consideration voltage drop and conditions for automatic disconnection of supply
低压设备安装.考虑电压降和自动断电条件等因素允许的