南京钮子开关厂家钮子开关价格黄山钮子开关价格宏聚电子​供Rating：5A 120VAC OR 28VDC Contact Resistance：10mΩ (Max) Insulation Resistance：1000MΩ Dielectric Strength：1500VAC For 1 Minute Temperature Range：-30℃～+85℃ Safety Approal：UL CUL CQC ROHSyclesElectrical Life: 5000Make-and-break-Cycles At Full Load