China AC Contactor CJ20 ZNFO Traditional Series - 690V, 1000A Motor Starter - Reliable Factory Suppliers
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 are extinguishing chamber, which has the advantages of high breaking capacity and high reliability;
C120-63~630 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±0.35 | 100 | 10.5 |
| CJ20-400 | 190 | 235 | 230 | 160±0.5 | 150±0.5 | 9±0.58 | 17±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)
Q:
What is the allowable operating temperature range for CJ20 series contactors?
The ambient air temperature must be between -5℃ and +40℃, with a 24-hour daily average temperature not exceeding +35℃.
Q:
What mounting methods are supported for smaller CJ20 models?
CJ20-10A to CJ20-25A contactors support flexible installation via standard screws or on a 35mm standard DIN card track.
Q:
What type of arc extinguishing chamber is used across the CJ20 range?
CJ20-10 to 16A models utilize double breakpoints with a simple break arc extinguishing chamber, while higher rating models use a plastic grid arc extinguishing chamber for high breaking capacity and reliability.
Q:
What are the advantages of the DC power-saving module in CJ20-63~630 models?
The DC power-saving module enables silencing energy-saving or DC-operated performance without occupying auxiliary contacts, significantly enhancing product service life and operational reliability.
Q:
What is the maximum permissible installation inclination?
The inclination between the contactor's installation surface and the vertical plane must not exceed ±5°.
Q:
What are the environmental altitude and humidity limitations for installation?
The installation altitude should not exceed 2000 meters. Relative humidity should not exceed 50% at +40℃, though up to 90% relative humidity is permitted at lower temperatures like +20℃.