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CJ12 Series and Derived CJ12Z Series AC Contactors

CJ12 series and derived CJ12Z series AC contactors are mainly used in the electric power circuits with the frequency of AC 50Hz, the ratedworking voltage of up to 380V and the rated working current of up to 600A for remote connection and breaking of circuits in electrical equipmensuch as cranes in metallurical and steel rolling enterprises, and for frequent starting,stopping, reversing and reverse connection ofAC motors.

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    advantage

    All products of the company can be customized for production according to user usage scenarios.
    product details

    Type and meaning

    CJ12 series and derived CJ12Z series AC contactors

    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
      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.Mechanicalendurance:no less than 1×10 times for two-pole products and noles than 1×10times for four-pole and five-pole products;
    2.Electrical endurance:separately agreed by the supplier and the buyer according tothe indicators of electrical endurance of three-pole productsfor the use categories ofAC-3 and AC-4and of two-pole,four-pole and five-pole products for the use category ofAC-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, andauxiliary 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 areequipped 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 chamberwith 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 normallyopen and normally closed contacts can be combined according to Table 1.
    The yulnerable parts of the whole contactor are characterized by simple disassembly and easy maintenance.

    Outline andinstallation dimensions

    CJ12 series and derived CJ12Z series AC contactors4
    Rated working current(A) Installation dimensions C Maximum outline dimensions Safe area Mounting CreW
    B A(total width) (Totalheight (Total depth)
    LevelII Level II LevelII Level II Level I  Level III    LevelIV   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

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