CJ20-100 380V CJ20-100 380V 2常开4常闭 CJ20-100 380V 3常开3常闭 CJ20-100 380V 4常开2常闭 CJ20-100 380V 两组主触头 CJ20-100 400V CJ20-100 42V CJ20-100 440V CJ20-100 48V CJ20-100 660V