CKJ5-1000/1250/1600 type AC vacuum contactor is suitable for AC 50HZ, rated voltage 1140V, rated current up to 1600A feeder network, for long-distance connection and disconnection of circuits, as well as frequent starting and stopping of AC motors, and is suitable for assembling into a flame-proof electromagnetic starter by cooperating with various devices. Because the main contacts work in a high vacuum environment, it has the advantages of no arc exposure, small size, light weight, long life, long maintenance cycle, etc. It is especially suitable for the composition of a variety of street lamp controllers and work in the oilfield, chemical industry and other occasions.
Working conditions
1. The altitude of sea level is not more than 2000 metres.
2. Ambient air temperature: -25℃～+40℃.
3. Relative humidity of the air: not more than 50% when the ambient air temperature is +25℃, and there can be higher relative humidity at lower temperatures. The average temperature of the wettest month is +25℃ when the average monthly maximum relative humidity is 90%.
4. The inclination of the mounting surface to the vertical is not more than 15°. The installation category is usually Class III.
5. Environmental pollution level is class 3.
6. The vibration is not greater than 30 m/s field.
Main technical parameters
| Item | Unit | Data | ||
| CKJ5-1000/1140 | CKJ5-1250/1140 | CKJ5-1600/1140 | ||
| Main circuit rated voltage | V | 1140 | 1140 | 1140 |
| Main circuit rated current | A | 1000 | 1250 | 1600 |
| Main circuit connecting capacity | A/100times | 6000 | 6000 | 6000 |
| Main circuit breaking capacity | A/10times | 4800 | 5000 | 5000 |
| Limit breaking capacity | A/3times | 6000 | 6000 | 6000 |
| Electrical life AC3 | times | 200000 | 200000 | 200000 |
| Electrical life AC4 | times | 20000 | 20000 | 20000 |
| Mechanical life | times | 1000000 | 1000000 | 1000000 |
| Rated operating frequency AC3 | times/h | 120 | 120 | 120 |
| Rated operating frequency AC4 | times/h | 300 | 300 | 300 |
| Short-term operation（20s） | times/h | 3000 | 3000 | 3000 |
| Contact opening | mm | 3±0.5 | 3±0.5 | 3±0.5 |
| Overrange | mm | ≥1.3 | ≥1.3 | ≥1.3 |
Shape and installation dimensions
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