包括在-65至+85°C的任何环境温度下，以及在0至24000 m的所有海拔高度下，用于具有符合ISO/R 222的电压和频率特性的飞机电气系统的这些部件的要求。给出了术语、尺寸要求、温度和海拔额定值、电流、电压和开断能力额定值、环境、，温升、时间/电流特性、耐久性、标识和标记、试验、型式试验、生产例行试验、生产质量试验和压降测量方法。

Includes the requirements for these components for use in aircraft electrical systems having voltage and frequency characteristics conforming to ISO/R 222, at any ambient temperature from -65 to + 85 °C, and all altitudes from 0 to 24 000 m. Gives terminology, requirements for dimensions, temperature and altitude rating, current, voltage and breaking-capacity ratings, environment, temperature rise, time/current characteristics, endurance, identification and marking, tests, type tests, production routine test, production quality tests and a method of measurement of voltage drop.