China CJ20t AC Contactors - Reliable Suppliers & Factory for 50Hz/60Hz, 690V/1140V, Up to 1000A
Advantage
All products of the company can be customized for production according to user usage scenarios.
Type and meaning
Normal working conditions and installation conditions
- The ambient air temperature should be -5℃ to +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℃, 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℃. Special measures should be taken for occasional condensation due to temperature change.
- Pollution level: level 3.
- Installation category: category II.
- 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 CJ20t-40A and above, the auxiliary contacts are installed on both sides of the main contact as independent components, which are electrically separated.
- CJ20t-10-25A products may be installed by screws or by 35mm standard card track.
- CJ20t-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.
- CJ20t-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.
Outline and installation dimensions
| Type | A | B | C | a | b | φ | mn | kg | |
|---|---|---|---|---|---|---|---|---|---|
| CJ20t-40 | 86.5 | 111.5 | 118 | 70±0.37 | 80±0.37 | 5±0.3 | 15±0.19 | 30 | 0.96 |
| CJ20t-63 | 116 | 142 | 146 | 100±0.4 | 90±0.4 | 5.8±0.3 | 10±0.29 | 60 | 2.9 |
| CJ20t-100 | 120±1.75 | 145±2 | 150±3.15 | 108±0.435 | 92±0.435 | 7±0.58 | 15±0.38 | 70 | 3 |
| CJ20t-160 | 146 | 187 | 178 | 130±0.5 | 130±0.5 | 9±0.58 | 15.5±0.35 | 80 | 5.5 |
| CJ20t-250 | 190 | 235 | 230 | 160±0.5 | 150±0.5 | 9±0.58 | 17±0.35 | 100 | 10.5 |
| CJ20t-400 | 190 | 235 | 230 | 160±0.5 | 150±0.5 | 9±0.58 | 17±0.35 | 100 | 10 |
| CJ20t-630 | 245 | 294 | 272 | 210±0.575 | 180±0.5 | 11±0.7 | 11±0.7 | 120 | 21.5 |
| CJ20t-800-1000 | 245 | 294 | 287 | 210±0.575 | 180±0.5 | 11±0.7 | 11±0.7 | 120 | 21.5 |
Frequently Asked Questions (FAQ)
Q:
Can the CJ20t series contactors be customized for specific scenarios?
Yes, all products of the company can be customized for production according to user usage scenarios.
Q:
What is the ambient temperature limit for installation?
The ambient air temperature should be within the range of -5℃ to +40℃, with the average temperature not exceeding +35℃ within any 24-hour period.
Q:
What altitude and environmental conditions are required for proper operation?
The installation altitude should not exceed 2000 meters. For atmospheric conditions, relative humidity should not exceed 50% at +40℃, though higher humidity (e.g., 90% at 20℃) is acceptable at lower temperatures.
Q:
How are the CJ20t-10-25A contactors installed?
CJ20t-10-25A products support flexible installation and can be mounted using screws or on a 35mm standard card track.
Q:
What are the benefits of the power-saving modules in larger models?
CJ20t-63 to 630 models feature a DC general power-saving module. This module allows the derivation of silencing energy-saving or DC-operated products without occupying auxiliary contacts, significantly improving both reliability and product lifespan.