AC Contactor CJ20 ZNFO Traditional Series - China Suppliers & Factory for Reliable Motor Starter Solutions
Type and meaning
Normal working conditions and installation conditions
- The ambient air temperature should be -5℃ -+40℃, with the average temperature of no higher than +35℃ within 24 hours.
- Altitude: not higher than 2000m;
- Atmospheric conditions: when the highest temperature is +40°C, the relative humidity of the air should not be higher than 50%; A higher relative humidity is allowed at a lower temperature, such as 90% under 20°C. Special measures should be taken for occasional condensation due to temperature change;
- Pollution level: level 3;
- Installation category: category III;
- Installation condition: the inclination between the installation surface and the vertical plane should not exceed +5°.
- Impact vibration: the product should be installed and used in a place without obvious shaking, impact and vibration.
Structural features
The contact system of the contactor is direct-acting with double breakpoints. For CJ20-40A and above, the auxiliary contacts are installed on both sides of the main contact as independent components, which are electrically separated.
CJ20-10-25A products may be installed by screws or by 35mm standard card track.
CJ20-10-16A products have double breakpoints to simply break the arc extinguishing chamber, and the rest adopt the plastic grid arc extinguishing chamber, which has the advantages of high breaking capacity and high reliability.
CJ20-63~630 power saving products have the DC general power saving module, which not only can derive silencing energy saving products or DC operated products, but also do not occupy auxiliary contacts, thus greatly improving the reliability and life of products.
Shape and installation dimensions(mm)
| Type | A | B | C | a | b | φ | F m n | kg | |
|---|---|---|---|---|---|---|---|---|---|
| CJ20-10 | 45 | 67.5 | 107 | 35±0.31 | 55±0.37 | 5±0.3 | 7.5±0.19 | 10 | 0.35 |
| CJ20-16 | 45 | 73 | 116.5 | 35±0.31 | 55±0.37 | 5±0.3 | 7.5±0.29 | 10 | 0.43 |
| CJ20-25 | 52.5 | 90.5 | 122 | 40±0.31 | 80±0.37 | 5±0.3 | 7.5±0.29 | 15 | 0.67 |
| CJ20-40 | 86.5 | 111.5 | 118 | 70±0.37 | 80±0.37 | 5±0.3 | 15±0.19 | 30 | 0.96 |
| CJ20-63 | 116 | 142 | 146 | 100±0.4 | 90±0.4 | 5.8±0.3 | 10±0.29 | 60 | 2.9 |
| CJ20-100 | 120±1.75 | 145±2 | 150±3.15 | 108±0.435 | 92±0.435 | 7±0.58 | 15±0.38 | 70 | 3 |
| CJ20-160 | 146 | 187 | 178 | 130±0.5 | 130±0.5 | 9±0.58 | 15.5±0.35 | 80 | 5.5 |
| CJ20-250 | 190 | 235 | 230 | 160±0.5 | 150±0.5 | 9±0.58 | 17.5±0.35 | 100 | 10.5 |
| CJ20-400 | 190 | 235 | 230 | 160±0.5 | 150±0.5 | 9±0.58 | 17.5±0.35 | 100 | 10 |
| CJ20-630 | 245 | 294 | 272 | 210±0.575 | 180±0.5 | 11±0.7 | 11±0.7 | 120 | 21.5 |
| CJ20-800-1000 | 245 | 294 | 287 | 210±0.575 | 180±0.5 | 11±0.7 | 11±0.7 | 120 | 21.5 |
Frequently Asked Questions (FAQ)
What is the ambient air temperature range for the CJ20 AC contactor?
The ambient air temperature must be maintained between -5℃ and +40℃. Additionally, the average temperature over a 24-hour period should not exceed +35℃.
What is the maximum installation altitude for the CJ20 series contactor?
The contactor is designed to be installed at altitudes not exceeding 2000 meters above sea level.
How are the CJ20-10-25A contactors installed?
The CJ20-10-25A models support flexible installation options; they can be mounted using screws or a standard 35mm card track.
What are the atmospheric humidity limits for operation?
At a peak temperature of +40℃, relative humidity should not exceed 50%. At lower temperatures, higher humidity is tolerated (e.g., up to 90% at 20℃). Special measures must be taken for occasional condensation.
What benefits does the DC general power saving module offer to the CJ20-63~630 models?
The module allows for energy-saving or DC-operated variations without occupying auxiliary contacts, which significantly improves the reliability and operational lifespan of the products.
Are there any specific installation angle requirements?
Yes, the inclination angle between the installation surface and the vertical plane must not exceed +5°.