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China CJ19 Capacitor Changeover Contactor - Reliable Suppliers & Factory for Low-Voltage Power Solutions

The CJ19 series capacitor changeover contactor is an essential component used in electric power circuits operating at frequencies of AC 50Hz or 60Hz, with a rated working voltage of up to 400V. This China-manufactured contactor is specifically designed for seamlessly engaging and disengaging low-voltage reactive power compensation equipment, making it ideal for connecting or disconnecting low-voltage shunt capacitors. One of the standout features of this contactor is its inrush current suppression device, which effectively mitigates the impact of closing inrush currents on capacitors, while also controlling over-voltage during disconnection. As a reliable choice from reputable manufacturers and suppliers in the industry, the CJ19 series contactor ensures optimal performance and longevity for your electrical systems

    Type and meaning

    CJ19 series capacitor changeover contactor
    Notes:
    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.
    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) le A 17 23 29 43 43 87 115 130
    Inrush current suppression capability 20le
    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 are the ambient temperature requirements for the CJ19 contactor?
    The ambient air temperature should be between -5℃ and +40℃. Additionally, the average temperature over a 24-hour period must not exceed +35℃. When the temperature reaches the highest limit of +40℃, the relative humidity should not exceed 50%.
    What is the maximum installation altitude for the CJ19 series contactor?
    The altitude of the installation site for the CJ19 series capacitor changeover contactor should not exceed 2000 meters.
    How should the wiring be connected on the power and load sides?
    According to the wiring schematic, terminals L1, L2, and L3 must be connected to the power supply side, while terminals T1, T2, and T3 must be connected to the load side.
    What is the allowable installation inclination for the contactor?
    The inclination between the installation surface of the contactor and the vertical plane must not exceed 5°. Additionally, it should be installed in a location free of obvious shaking, impact, or vibration.
    What is the rated insulation voltage (Ui) for the different CJ19 models?
    For CJ19-25 through CJ19-95 models, the rated insulation voltage (Ui) is 500V. For the larger CJ19-115 through CJ19-170 models, the rated insulation voltage (Ui) is 690V.
    What is the pollution level and installation category of this product?
    The contactor is rated for Pollution Level 3 and falls under Installation Category II.

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