1. 小容量非密封型 此类船型开关,其额定电压和额定电流较小,5A @ 120VAC, 28VDC; 2A @ 250VAC,此类产品有三档位置,材质方面其终端通常黄铜包金或包银。寿命长久,可达50000次左右。如ANR系列Electrical Ratings 5A @ 120VAC, 28VDC;2A @ 250VACElectrical Life 50,000 cycles typicalContact Resistance < 20 mΩ max initial @ 2-4VDC, 100mADielectric Strength 1500Vrms minInsulation Resistance > 100MΩ minOperating Temperature -40°C to 85°CStorage Temperature -40°C to 85°C 2.大容量密封型 对大容量船型开关来说,比较适用于使用在电源上,密闭安全方面更得到保障,15A @ 125VAC ;8A @ 250VAC,有两个档位,ON or OFF,终端材质采用黄铜包锡。如RA系列Electrical Ratings 15A @ 125VAC;8A @ 250VACElectrical Life 10,000 cycles typicalContact Resistance < 50 mΩ initialDielectric Strength 1500Vrms minInsulation Resistance > 100MΩ minOperating Temperature -40°C to 85°CStorage Temperature -40°C to 85°C以上开关分类基本美国CIT开关继电器(RIVERSUN (HONG KONG) LTD )