China CJX2-N Interlocking Contactor Suppliers - High-Performance Factory for AC Motor Control and Protection
Type and meaning
Normal working conditions and installation conditions
- The altitude of the installation site should not exceed 2000m;
- The ambient air temperature should not be higher than +40℃ and not be lower than -5℃.
- When the highest temperature is +40℃, the relative humidity of the air on the installation site should not be higher than 50%; A higher relative humidity is allowed at a lower temperature: In the wettest month, the monthly average minimum temperature should not exceed +20℃ and the average maximum relative humidity should not exceed 90%. Measures should be taken for condensation on the product due to temperature change.
- The inclination between the installation surface and the vertical plane should not exceed ±22.5°.
- Pollution level: level 3;
- The product should be installed in a place without obvious shaking, impact and vibration.
Structural features of the product
- The action mechanism is of direct acting type, and the contact is of double breakpoints.
- With the combination function, all surfaces except for the installation surface may be additionally provided with accessories.
- Auxiliary contact sets maybe additionally installed on both sides.
- Auxiliary contact sets or air damping, type time relays may be additionally installed on the upper side.
- The coil terminal may be additionally provided with various functional modules such as time delay units.
- Both mechanical and electrical interlocking can be achieved.
Main parameters and technical performance
| Type | CJX2-09N | CJX2-12N | CJX2-18N | NCJX2-25N | CJX2-32N | CJX2-40N | CJX2-50N | CJX2-65N | CJX2-80N | CJX2-95N | ||||||
| Rated working current A | 380V | 9 | 12 | 18 | 25 | 32 | 40 | 50 | 65 | 80 | 95 | |||||
| 660V | 20 | 8.9 | 12 | 18 | 21 | 34 | 39 | 42 | 49 | 55 | ||||||
| Conventional thermal current Ith A | 20 | 20 | 32 | 40 | 50 | 60 | 80 | 80 | 125 | 125 | ||||||
| Rated working voltage Ue V | 380 | |||||||||||||||
| Rated insulation voltage Ui V | 690 | |||||||||||||||
| AC-3 | Electrical endurance 104 times | 100 | 100 | 100 | 100 | 80 | 80 | 80 | 80 | 60 | 60 | |||||
| Operating frequency times/h | 1200 | 1200 | 1200 | 1200 | 600 | 600 | 600 | 600 | 600 | 600 | ||||||
| AC-4 | Electrical endurance 104 times | 20 | 20 | 20 | 20 | 20 | 15 | 15 | 15 | 10 | 10 | |||||
| Operating frequency times/h | 300 | 300 | 300 | 300 | 300 | 300 | 300 | 300 | 300 | 300 | ||||||
| Rated working current Ie A | 380V | 3.5 | 5 | 7.7 | 8.5 | 12 | 18.5 | 24 | 28 | 37 | 44 | |||||
| 660V | 1.5 | 2 | 2.8 | 4.4 | 7.5 | 9 | 12 | 14 | 17.3 | 21.3 | ||||||
| Auxiliary contact | Electrical endurance | AC-15 360VA | The same as the electrical endurance of the main contact (AC-3) | |||||||||||||
| DC-13 (33W) | ||||||||||||||||
| Minimum load for connection | 6V 10mA | |||||||||||||||
| Coil | Rated control voltage Us V | 24, 48, 110, 220, 380 | ||||||||||||||
| Pull-in voltage | (0.85~1.10)Us | |||||||||||||||
| Release voltage | (0.20~0.75)Us | |||||||||||||||
| Coil power | Pull-in | 70 | 70 | 70 | 110 | 110 | 200 | 200 | 200 | 200 | 200 | |||||
| Holding | 8 | 8 | 8 | 11 | 11 | 20 | 20 | 20 | 20 | 20 | ||||||
Outline and installation dimensions
Note: C1: CJX2-N+F4
C2: CJX2+SK2-2/3
C2: CJX2+SK2-2/3
| Interlocking contactor type | A max | B max | C max | D max | C1 | C2 | a | b |
|---|---|---|---|---|---|---|---|---|
| CJX2-09N, 12N | 112 | 76 | 87 | 86 | 115 | 134 | 96 | 50 |
| CJX2-18N | 112 | 76 | 92 | 86 | 120 | 139 | 96 | |
| CJX2-25N | 134 | 86 | 102 | 98 | 130 | 149 | 112 | 60 |
| CJX2-32N | 134 | 86 | 120 | 100 | 135 | 154 | 112 |
Note: C1: CJX2-N+F4
C2: CJX2+SK2-2/3
C2: CJX2+SK2-2/3
| Interlocking contactor type | A max | B max | C max | D max | C1 | C2 | a | ai | b |
|---|---|---|---|---|---|---|---|---|---|
| CJX2-10N, 50N, 65N | 176 | 128 | 145 | 138 | 149 | 168 | 49 | 90±0.70 | 100 110 |
| CJX2-80N, 95N | 190 | 128 | 162 | 146 | 160 | 179 | 56 | 90±0.70 | 100 110 |
Tightening torque for verifying mechanical strength of connection terminal of AC contactor
| Basic specification | Thread diameter mm | Tightening torque N·m |
|---|---|---|
| 9~12 | 3.5 | 0.8 |
| 16-25 | 4 | 1.2 |
| 21-50 | 6 | 2.5 |
| 63~125 | 6 | 3.0 |
| 160~250 315~500 | 8 10 | 6.0 10.0 |
| 630~1000 | 12 | 14.0 |
Frequently Asked Questions (FAQ)
What is the maximum installation altitude for the CJX2-N interlocking contactor?
The installation site altitude should not exceed 2000 meters above sea level for normal operation.
What are the ambient temperature limits for this contactor?
The ambient air temperature must be maintained between a maximum of +40℃ and a minimum of -5℃.
How does humidity affect the installation conditions?
At the maximum temperature of +40℃, relative humidity should not exceed 50%. However, higher humidity is permitted at lower temperatures, up to a monthly average maximum relative humidity of 90% when the monthly average minimum temperature does not exceed +20℃. Appropriate measures must be taken to prevent condensation.
What structural features and accessories can be added to the CJX2-N contactor?
The contactor utilizes a direct-acting mechanism with double breakpoints. Except for the installation surface, auxiliary contact sets can be installed on both sides or the upper side. Additionally, air damping time relays, coil terminal functional modules (such as time delay units), and mechanical/electrical interlocking mechanisms can be added.
What is the recommended tightening torque for terminal connections?
The tightening torque varies by specification. For example, basic specifications 9~12 (thread diameter 3.5mm) require 0.8 N·m, while specifications 21-50 (thread diameter 6mm) require 2.5 N·m. Please refer to the complete torque table above for exact specifications.