钮子开关厂家钮子开关价格​南京钮子开关批发宏聚电子供 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 ROHSycles Electrical Life: 5000Make-and-break-Cycles At Full Load