CKG3-160-250-400-630 AC vacuum contactor is suitable for feed networks with AC 50HZ, rated voltage up to 12KV, and rated current 160 to 630A. It is used for connecting and breaking circuits over long distances, as well as frequently starting and stopping AC motors. It is suitable for use with various protection devices and assembled into a flameproof electromagnetic starter.
This series of vacuum contactors is suitable for power network systems below 12KV. After a mechanical interlocking shaft is installed between two vacuum contactors, mechanical interlocking and interlocking functions can be achieved, and electrical locking can also be achieved. It is mainly used for forward and reverse conversion, power braking, and line main switch in electronic control lines. It can be operated frequently and has the advantages of long mechanical life, high reliability, less maintenance, and excellent switching performance. It can also be used as the main switch in loads such as controlling the forward and reverse switching of high-voltage fans.
| Item | Data |
| Rated working voltage (Ue) | 12kV |
| Rated working current (le) | 160A, 250A, 400A, 630A |
| Power frequency withstand voltage | 42kV |
| Lightning impulse withstand voltage | 75kV |
| Rated breaking capacity | 8le 25 times |
| Rated closing capacity | 10le 100 times |
| Rated short-time withstand current | (10Ie) 1.6kA, 2.5kA, 4kA, 6.3kA |
| Rated peak withstand current | (25le) 4kA, 6.3kA, 10kA, 16kA |
| Short circuit current breaking and closing | (10Ie) 0-180s-CO-180s-CO 1time |
| Overload withstand current | (15le) 2.4kA, 3.8kA, 6kA, 10kA |
| Rated opening distance | 5.5±0.5mm |
| overtravel | ≥1.5mm |
| Closing synchronicity | ≤2ms |
| Mechanical life | 500000 times |
| Electrical life AC-3 | 250000 times |
| Electrical life AC-4 | 100000 times |
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