本规范涵盖了飞机、导弹、航天器、船舶和其他主要运载工具或地面支援设备中使用的电磁密封继电器的一般要求（见6.1）。这些继电器设计用于在从低电平到触点额定值高达25安培交流电（ac）或直流电（dc）的功率切换的全范围内运行。规定25安培继电器要求的规格表（见3.1）仅适用于电阻负载最大额定负载为25安培的继电器。所有其他额定负载（电机、电感、灯）均小于25安培。故障率（FR）水平是在本文规定的额定负载条件下，在+125åC的100000次循环的基础上，在90%的置信水平下确定的，在60%的置信水平上确定的。 有关应用和注意事项的信息，请参见6.1。

This specification covers the general requirements for electromagnetic, hermetically sealed relays for use in aircraft, missile, spacecraft, ship, and other primary vehicles or in ground support equipment (see 6.1). These relays are designed to operate over the full range from low level to power switching with contact ratings up to 25 amperes alternating current (ac) or direct current (dc). Specification sheets (see 3.1) specifying requirements for 25 ampere relays are for relays that have a maximum load rating of 25 amperes for resistive load only. All other load ratings (motor, inductive, lamp) are less than 25 amperes. The failure rate (FR) level is established at a confidence level of 90 percent for qualification and 60 percent for maintenance of qualification based on 100,000 cycles at +125å¡C under the rated load conditions specified herein. For application and caution information, see 6.1.