Product Description This serise vacuum contactor is suitable for power network of AC 50Hz,the main circuit rated voltage 1140V,rated current is 1000A-1250A,for making,breaking,frequently starting and controling AC motor,and suitable for forming magnetic starter with a variety of protectors(JDB electronic integrated protection,JR9 type over current protection devices,the RC absorption device),especially suitable for components widely used anti-explosion magnetic starter and large mineral lapping switch equipment. The contactor complies with GB/T 14048.4,IEC 60947-4-1 and JB/T 7122 standard,the main performance indicators have reached the international level.ItemCKJ-5-1000~1250/1.14Main circuit rated voltage1.14kVMain circuit rated current1000A1250AMain circuit making capacity6000A/100timesMain circuit breaking capacity4500A/10timesLimit breaking capacity5000A/3timesElectrical life AC3600,000timesElectrical life AC460,000imesMechanical life time1,000,000imesRated operating frequency AC3600imes/hRated operating frequency AC4120imes/hShort-time operating frequency(20s)1000imes/hClearance between open contacts2.8±0.1mmOver travel1.0±0.1mm