本规范规定了电气应用中接触额定值为25安培电阻（除非另有规定）及以上的机电继电器的一般要求。辅助触点的额定电流可能较低。当继电器直接安装在飞机、导弹、航天器、船舶和其他主要运载工具的结构上或地面支持和船上设备中时，本规范涵盖的继电器能够满足电气和环境要求。其他额定值可能如规定（见3.1）。注意:使用任何低于额定线圈电压的线圈电压都会影响继电器的工作。 有关其他应用和注意事项的信息，请参见6.1。

This specification establishes general requirements for electromechanical relays with contact ratings from 25 amperes resistive (unless otherwise specified) and upward for use in electrical applications. Auxiliary contacts may be rated at lower currents. Relays covered by this specification are capable of meeting the electrical and environmental requirements when mounted directly to the structure of aircraft, missile, spacecraft, ship, and other primary vehicles or in ground support and shipboard equipment. Other ratings may be as specified (see 3.1). CAUTION: The use of any coil voltage less than the rated coil voltage will compromise the operation of the relay. For additional application and caution information, see 6.1.