一般尺寸为长19.8宽6.4高10.2，功能上有高精度和高寿命的不同性能。如系列:OperatingFrequency(mechanical).....120operati/mimOperatingFrequency(electrical).....10~30operati/mimContactResistance(initial).....300mΩ(Max.)InsulationResistance(at500VDC).....100MΩ(Min.)DielectricStrength(50-60Hz).....1000VACRMSServiceLife(mechanical).....Min.10000000operatiServiceLife(electrical).....Min.6000operati故障实例三：交流220V整流滤波电路出现短路性故障，且开机烧。先检查一下整流二极管有无短路、滤波电容是否严重漏电。还可拔去消磁线圈插头，检查一下消磁热敏电阻有无短路性故障，如有应换新。)