China CJX2 AC Contactor - Reliable Suppliers and Factory for 50Hz/60Hz Voltage Control up to 690V
Type and meaning
Note 1:
09A-95A adopts the number of auxiliary contacts, while 115A-800A adopts the number of poles.
10 means three normally open main contacts and one normally open auxiliary contact (32A and below);
01 means three normally open main contacts and one normally closed auxiliary contact (32A and below);
11 means three normally open main contacts, one normally open auxiliary contact and one normally closed auxiliary contact (40A and above).
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℃, 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 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.
Main parameters and technical performance
Main parameters and technical performance index contactor
| Type | CJX2-09 | CJX2-12 | CJX2-18 | CJX2-25 | CJX2-32 | CJX2-40 | CJX2-50 | CJX2-65 | CJX2-80 | CJX2-95 | ||
| Rated working current | 400(380)V | AC-3 | 9 | 12 | 18 | 25 | 32 | 40 | 50 | 65 | 80 | 95 |
| AC-4 | 3.5 | 5 | 7.7 | 8.5 | 12 | 18.5 | 24 | 28 | 37 | 44 | ||
| 690(660)V | AC-3 | 6.6 | 8.9 | 12 | 18 | 21 | 34 | 39 | 42 | 49 | 49 | |
| AC-4 | 1.5 | 2 | 3.8 | 4.4 | 7.5 | 9 | 12 | 14 | 17.3 | 21.3 | ||
| Conventional free air thermal current | 20 | 20 | 32 | 40 | 50 | 60 | 80 | 80 | 95 | 95 | ||
| Rated insulation voltage | 690 | 690 | 690 | 690 | 690 | 690 | 690 | 690 | 690 | 690 | ||
| Controllable three-phase squirrel cage motor power (AC-3) kW | 230(220)V | 2.2 | 3 | 4 | 5.5 | 7.5 | 11 | 15 | 18.5 | 22 | 25 | |
| 400(380)V | 4 | 5.5 | 7.5 | 11 | 15 | 18.5 | 22 | 30 | 37 | 45 | ||
| 690(660)V | 5.5 | 7.5 | 10 | 15 | 18.5 | 30 | 37 | 37 | 45 | 45 | ||
| Operating frequency (times/h) | Electrical endurance, mechanical endurance | AC-3 | 1200 | 1200 | 1200 | 1200 | 600 | 600 | 600 | 600 | 600 | 600 |
| AC-4 | 300 | 300 | 300 | 300 | 300 | 300 | 300 | 300 | 300 | 300 | ||
| - | 3600 | 3600 | 3600 | 3600 | 3600 | 3600 | 3600 | 3600 | 3600 | 3600 | ||
| Electrical endurance (10,000 times) | AC-3 | 100 | 100 | 100 | 100 | 80 | 80 | 60 | 60 | 60 | 60 | |
| AC-4 | 20 | 20 | 20 | 20 | 20 | 15 | 15 | 15 | 10 | 10 | ||
Outline and installation dimensions
Outline and installation dimensions of CJX2-09~32
Outline and installation dimensions of CJX2-40~95
| Contactor type | A max | B max | C max | D max | E max | a | b | φ |
| CJX2-09~12 | 47 | 76 | 82 | 120.5 | 140.5 | 34/35 | 56/60 | 4.5 |
| CJX2-18 | 47 | 76 | 87 | 125.5 | 145.5 | 34/35 | 50/60 | 4.5 |
| CJX2-25 | 57 | 86 | 95 | 133.5 | 153.5 | 40 | 48 | 4.5 |
| CJX2-32 | 57 | 86 | 100 | 138.5 | 158.5 | 40 | 48 | 4.5 |
| CJX2-4011~6511 | 77 | 129 | 116 | 154.5 | 174.5 | 40 | 105 | 6.5 |
| CJX2-4004~6504 | 84 | 129 | 116 | 154.5 | 174.5 | 40 | 105 | 6.5 |
| CJX2-40086~508 | 84 | 129 | 127 | 154.5 | 174.5 | 40 | 105 | 6.5 |
| CJX2-8011~9511 | 87 | 129 | 127 | 165.5 | 185.5 | 40 | 105 | 6.5 |
| CJX2-8004~9504 | 96 | 129 | 122 | 160.5 | 180.5 | 40 | 105 | 6.5 |
| CJX2-8008~9508 | 96 | 129 | 135 | 160.5 | 180.5 | 40 | 105 | 6.5 |
Frequently Asked Questions
Q1: What do the auxiliary contact codes "10", "01", and "11" represent for CJX2 contactors?
For models rated at 32A and below, "10" indicates three normally open (NO) main contacts and one NO auxiliary contact, while "01" indicates three NO main contacts and one normally closed (NC) auxiliary contact. For models rated at 40A and above, "11" indicates three NO main contacts, one NO auxiliary contact, and one NC auxiliary contact.
Q2: What are the standard ambient temperature limits for installing CJX2 series AC contactors?
The ambient air temperature must be maintained within the range of -5℃ to +40℃. Additionally, the average temperature over a 24-hour period should not exceed +35℃ to ensure proper operation.
Q3: How does altitude affect the installation of CJX2 AC contactors?
CJX2 series AC contactors are designed to operate under normal atmospheric conditions at an altitude of not higher than 2000 meters. Installation above this altitude may require derating due to changes in air density and cooling capacity.
Q4: What is the maximum allowable relative humidity for safe operation?
At the maximum temperature of +40℃, the relative humidity of the air should not exceed 50%. At lower temperatures, higher relative humidity is permitted (for example, up to 90% at 20℃). Special precautions should be taken to prevent condensation caused by temperature variations.
Q5: What installation physical conditions must be met for these contactors?
The inclination between the contactor's installation surface and the vertical plane must not exceed ±5°. The device should also be installed in a location free from significant shaking, external impact, and structural vibration.
Q6: What is the difference in contact designation between small and large capacity CJX2 contactors?
For smaller CJX2 contactors (09A to 95A), the naming convention adopts the number of auxiliary contacts. For larger capacity contactors (115A to 800A), the naming convention adopts the number of poles.