CKJ3 7.2kV 160A, 250A, 400A, 630A vacuum contactor
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General Introduction
CKG3vacuum contactor is mainly used in the power system with AC 50Hz and rated voltage 7.2kV, for making or breaking circuit and to make electromagnetic starter with suitable protective device and F-C switchgear.
Working Conditions
Altitude above sea should not be over 1,000m;
Ambient temperature is -5~40°C;
Average temperature in 24 hour limited below 35°C;
When the highest temperature is 40°C, the relative humidity should not be higher than 50%;
Pollution degree: class 3
Model&Meaning
CKJ3-630/7.2
C:Contactor
K:Vacuum
J:High Voltage
630:rated current
7.2:rated voltage
Technical Specification
| Model | Rated voltage(v) | Rated current(Main circuit)(A) | Parameter of main contacts | Power frequencyWithstand voltage V(effective value) | |||||
| Maincircuit | Controlcircuit | Clearance(mm) | Overtravel (mm) | pressure (N) | |||||
| Maincircuit | Auxiliarycircuit | Controlcircuit | |||||||
| CKJ3-7.2/160 | 7200 | 220/110 | 160 | 3.5±0.3 | 2±0.2 | >85N | 32000 | 2500 | 2000 |
| CKJ3-7.2/250 | 7200 | 220/110 | 250 | 3.5±0.3 | 2±0.2 | >85N | 32000 | 2500 | 2000 |
| CKJ3-7.2/400 | 7200 | 220/110 | 400 | 3.5±0.3 | 2±0.2 | >85N | 32000 | 2500 | 2000 |
| CKJ3-7.2/630 | 7200 | 220/110 | 630 | 3.5±0.3 | 2±0.2 | >85N | 32000 | 2500 | 2000 |
| Model | Making capacity | Breaking capacity | Limit opening current(A) | Overload | Mechanism life | Weight(kg) |
| CKJ3-7.2/160 | 10Ie,100times | 8Ie,25times | 10Ie | 8Ie,10s | 1million times | 25.5 |
| CKJ3-7.2/250 | 10Ie,100times | 8Ie,25times | 10Ie | 8Ie,10s | 1million times | 25.5 |
| CKJ3-7.2/400 | 10Ie,100times | 8Ie,25times | 10Ie | 8Ie,10s | 1million times | 25.5 |
| CKJ3-7.2/630 | 10Ie,100times | 8Ie,25times | 10Ie | 8Ie,10s | 1million times | 25.5 |
Note: “Ie” represents the rated current of main circuit
Outline Drawing
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