China CJ12 Series AC Contactors and CJ12Z Series from Reliable Suppliers and Factory for Electrical Applications
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 higherrelative humidity is allowed at a lower temperature, such as 90% under 20'c Special measures should be taken for occasional condensationdue 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.
Technical parameters and performance (see Table 1);
Contactor applies to the following working systems:
- 8-hour working system;
- Intermittent periodic working system, with a load factor of40% (4-pole and 5-pole contactors are only applicable to this working system)
- Short-time working system;Sucking coil specifications:AC: 50Hz: 127V,220V,380V;DC: 110V,220V;
Action characteristics:pull-in voltage:(85%-110%)Us:
release voltage:AC(20%~75%)Us,DC(10%~75%)Us.
Main parameters and technical performance
| Model | Rated insulation and working voltage |
Conventional free air thermal cufTent(A) |
Rated working current(A) | Mechanical endurance 10 times |
Electrical endurance (4C-2)10 times |
Number of operating COC Derho |
Auxiliary contacts | Type of matched fuse |
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| AC-2 | AC-4 | Control capacity | Auxilhary contact Conventional free air thermal current(A) |
Number | ||||||||
| C12-100 | 380 | 100 | 100 | 100 | 300 | 15 | 600 | AC 380V100VA DC 220V90W |
10 | open | closed | RT16-250 |
| C12-150 | 380 | 150 | 150 | 150 | 300 | 15 | 600 | 2 | 4 | RT16-315 | ||
| C12-250 | 380 | 250 | 250 | 250 | 300 | 15 | 600 | 3 | 3 | RT16-400 | ||
| C12-400 | 380 | 400 | 400 | 400 | 100 | 10 | 300 | 4 | 2 | RT16-500 | ||
| C12-600 | 380 | 600 | 600 | 600 | 100 | 10 | 300 | 5 | 1 | RT16-630 | ||
Notes:
1. Mechanical endurance: no less than 1×10 times for two-pole products and no less than 1×10 times for four-pole and five-pole products;
2. Electrical endurance: separately agreed by the supplier and the buyer according to the indicators of electrical endurance of three-pole products for the use categories of AC-3 and AC-4 and of two-pole, four-pole and five-pole products for the use category of AC-2;
3. For CJ12Z series DC controlled AC contactor, the maximum current specification reaches 400A, and the product body has occupied a pair of normally closed auxiliary contacts.
Structural features of the product
CJ12 series AC contactor is of open type, with the plane layout of bars. With electromagnetic system in the right, main contact in the center, and auxiliary contact in the left, it is provided with the rotatable stop gear for easy monitoring and repair.
The magnetic system of the contactor consists of U-shaped moving and static iron cores and coil. Both moving and static iron cores are equipped with buffer devices, which prolongs the service life of the product.
For CJ12Z, the DC magnetic system is adopted.
The main contact system of the contactor adopts a single breakpoint rotating structure, and is equipped with clay arc extinguishing chamber with longitudinal slit, which has good arc extinguishing performance.
The auxiliary contact adopts bridge-type double breakpoints and is provided with the transparent protective cover. The number of normally open and normally closed contacts can be combined according to Table 1.
The vulnerable parts of the whole contactor are characterized by simple disassembly and easy maintenance.
Outline and installation dimensions
| Rated working current(A) |
Installation dimensions | C | Maximum outline dimensions | Safe area | Mounting Screw |
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| B | A(total width) | (Total height) | (Total depth) | |||||||||||
| Level II | Level II | Level II | Level II | Level I | Level III | Level IV | Level V | L | M | |||||
| 100 | 274 | 330 | 386 | 442 | 316 | 372 | 430 | 486 | 194 | 195 | 80 | 50 | M10 | |
| 150 | 307 | 370 | 433 | 496 | 346 | 409 | 473 | 537 | 219 | 207 | 70 | 70 | M10 | |
| 250 | 335 | 405 | 475 | 545 | 374 | 445 | 516 | 586 | 255 | 230 | 70 | 80 | M10 | |
| 400 | 360 | 440 | 520 | 600 | 420 | 500 | 581 | 663 | 296 | 274 | 100 | 80 | M12 | |
| 600 | 404 | 500 | 596 | 692 | 469 | 566 | 664 | 760 | 349 | 334 | 120 | 150 | M16 | |
Frequently Asked Questions
What are the ambient temperature limits for the CJ12 series AC contactors?
The ambient air temperature should be within the range of -5°C to +40°C. Additionally, the average temperature within a 24-hour period must not exceed +35°C.
What is the maximum installation altitude for these contactors?
The contactors are designed to be installed and operated at an altitude not higher than 2000 meters above sea level.
What are the available coil specifications for the CJ12 series?
The sucking coil specifications include AC (50Hz) options of 127V, 220V, and 380V, as well as DC options of 110V and 220V.
How is the magnetic system designed in the CJ12 and CJ12Z contactors?
The CJ12 series features a magnetic system consisting of U-shaped moving and static iron cores and a coil equipped with buffer devices to prolong service life. For the derived CJ12Z series, a DC magnetic system is adopted.
What are the structural features of the contactor's main and auxiliary contacts?
The main contact system adopts a single breakpoint rotating structure with a clay arc extinguishing chamber with longitudinal slit. The auxiliary contacts adopt bridge-type double breakpoints and feature a transparent protective cover.