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China CJ19 Series Capacitor Changeover Contactors from Reliable Suppliers & Factory for Reactive Power Compensation

The CJ19 series capacitor changeover contactor is an essential component for electric power circuits operating at frequencies of AC 50Hz or 60Hz, designed to handle rated working voltages of up to 400V. This contactor is specifically engineered for efficiently engaging and disengaging low-voltage reactive power compensation equipment and shunt capacitors. Featuring a built-in inrush current suppression device, it significantly mitigates the effects of closing inrush currents on capacitors, while also controlling over-voltage during disconnection. As a reputable China supplier and factory, we guarantee high-quality contactors that enhance the performance and reliability of your electrical systems

    Type and meaning

    CJ19 series capacitor changeover contactor
    Notes:
    1. The number of auxiliary contacts is represented by two digits, of which the tens digit is the logarithm of normally open contacts, and the units digit is the logarithm of normally closed contacts.
    2. For AC-6b 400vAT, the rated working currents corresponding to various specification codes are 25(18A), 32(24A), 43(29A), 50(36A), 63(48A), 95(58A), 125(87A).

    Normal working conditions and installation conditions

    • The ambient air temperature should not exceed +40℃, with the average temperature of no higher than +35℃ within 24 hours. The lower limit of the ambient air temperature should be -5℃. 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.
    • The altitude of the installation site should not exceed 2000m.
    • Pollution level: level 3.
    • Installation category: category II.
    • Installation condition: the inclination between the installation surface of the contactor and the vertical plane should not exceed 5°.
    • Impact and vibration: the product should be installed in a place without obvious shaking, impact and vibration.

    Schematic diagram of wiring

    For the schematic diagram of wiring of CJ19 series, please refer to Fig. 1.

    CJ19 series capacitor changeover contactor 02

    L1~L3 should be connected to the power supply side; T1~T3 should be connected to the load side.

    Main parameters and technical performance

    CJ19 25 32 43 63 95 115 150 170
    Rated insulation voltage (Ui) V 500V 690V
    Rated working voltage (Ue) V 220V/240V, 380V/400V
    Controllable capacitor Capacity (Qn) Kva 220V 6 9 10 15 28.8 (240V) 34.5 (240V) 46 (240V) 52 (240V)
    380V 12 18 20 30 50 (400V) 60 (400V) 80 (400V) 90 (400V)
    Conventional free air thermal current Ith 25 32 43 63 63 200 200 275
    Rated working current (AC-6b) Ie A 17 23 29 43 43 87 115 130
    Inrush current suppression capability 20Ie
    Control power supply voltage Us V 110, 127, 220, 380
    Auxiliary contact AC-15: 360VA | DC-13: 33W | Ith: 10A
    Operating frequency times/h 120
    Electrical endurance 10,000 times 10 2
    Mechanical endurance 10,000 times 100 300
    Dimensions and type Outline dimensions Installation dimensions
    A B C D A B φ Calliper gauge
    CJ19-25 76 47 125 120 35 50/60 4.5 35
    CJ19-32 86 58 135 130 40 50/60
    CJ19-43 86 58 135 130 40 50/60
    CJ19-63 128 79 156 150 40 100/110 6.5 35/75
    CJ19-80 128 87 160 200 40 100/110
    CJ19-95 128 87 160 200 40 100/110

    Shape and installation dimensions(mm)

    CJ19 series capacitor changeover contactor 03

    Fig.2 Diagram of outline and installation dimensions of CJ19-25, 32, 43

    Frequently Asked Questions (FAQ)

    What is the meaning of the auxiliary contact digits on the CJ19 contactor?

    The number of auxiliary contacts is represented by two digits. The tens digit represents the logarithm of normally open (NO) contacts, and the units digit represents the logarithm of normally closed (NC) contacts.

    What are the ambient air temperature limits for installing the CJ19 contactor?

    The ambient air temperature must not exceed +40℃, and the average temperature over a 24-hour period should not exceed +35℃. The lower limit for the ambient air temperature is -5℃.

    What is the maximum installation altitude for the CJ19 series?

    The altitude of the installation site for the CJ19 series capacitor changeover contactor should not exceed 2000 meters.

    What is the allowable inclination angle for the installation surface?

    The inclination between the installation surface of the CJ19 contactor and the vertical plane should not exceed 5°.

    What is the inrush current suppression capability of the CJ19 series?

    The CJ19 series contactor features an inrush current suppression capability rated at 20Ie.

    What control power supply voltages (Us) are supported?

    The CJ19 series supports control power supply voltages (Us) of 110V, 127V, 220V, and 380V.

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