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  • Scope of Application

    CJT1 AC Contactor (Also known as motor contactor), mainly used for the power line of AC 50Hz or 60Hz, rated working voltage to 380V, current to150A, for long-distance making and breaking circuit, and combine with the appropriate thermal relay or electronic protective device into a motor starter to protect circuits that may overload.
    CJT1 AC contactors (motor contactor)meet the standards: GB14048.4, IEC60947-4-1 and JB / T8730, is an alternative product of CJ10 AC electrical contactor.

    Model and meaning

    Some common models:

    Normal operating conditions and installation conditions

    Ambient air temperature: -5℃~+40℃, the average does not exceed +35℃ within 24 hours.
    Altitude: not more than 2000m.
    Atmospheric conditions: the maximum temperature is +40℃, the relative humidity is not more than 50%; at lower temperatures can allow a higher relative humidity, for example, +20℃ up to 90%, special measures should be taken for condensation produced occasionally due to temperature changes.
    Pollution level: 3.
    Installation category: Ⅲ.
    Installation conditions: The inclination of the installation surface and the vertical plane is not more than ±5°.
    Shock Vibration: The product should be installed and used in the place without significant shaking, shock and vibration.

    Main parameters and technical performance

    According to the current level, moto contactor is divided into: 10A, 20A, 40A, 60A, 100A, 150A.
    Coil rated control supply voltage Us is: AC (50Hz): 36V, 110V, 127V, 220V, 380V.
    Operating conditions: pull-in voltage (85% ~ 110%) Us; release voltage (20% ~ 75%) Us.

    The main parameters and technical performance (see table).
    Model Rated voltage
    Rated current
    Operating frequency
    Making capacity Breaking capacity Electrical life
    10000 times
    Mechanical life
    10000 times
    Control electric power(KW) Attracting coil
    AC-3 AC-4 220V 380V Rated voltage
    Starting power Holding power



    10 600

    15Ue cosφ

    15Ue cosφ=
    60 2 300 2.2 4 36,127,220,380 65 9



    20 600 60 2 5.5 10 36,127,220,380 140 9.5



    40 600 60 2 11 20 36,127,220,380 230 19



    60 600 60 1 17 30 36,127,220,380 485 95



    100 600 60 1 30 50 36,127,220,380 760 105



    150 600 60 0.6 43 75 36,127,220,380 950 110

    Structural features

    The motor contactor has the same structure and installation size as CJ10. The arc extinguish chamber is made of arc-resistant plastic arc cover and iron grille, and the base of CJT1-60, 100 and 150 are made of reinforced plastic.
    CJT1-10~40A electrical contactor for the double-break direct-acting structure, 60-150A electrical contactor contact system for the double-break direct-acting, electromagnetic system for the lever rotation structure. Contact are using a new copper-based alloy material without silver. With strong resistance to oxidation, contact resistance is small and stable, and have good anti-welding and abrasion resistance, saving precious metals, reduce costs. 20-40A electrical contactor with U-shaped arc extinguishing caps and phenolic plastic arc extinguish chamber, 60-150A electrical contactor use a new staggered arrangement of vertical and transverse grid, DMC arc-resistant plastic arc extinguish chamber, performance of arc extinguishing is good.

    Outline and installation dimensions


    Outline dimension


    Mounting dimensions


    n-φ F
    CJT1-10 70x70x96.5 56x58 3-φ5 15
    CJT1-20 92x102x110 76x68 3-φ5 15
    CJT1-40 115x128x125 100x75 3-φ5.5 30
    CJT1-60 170x178x135 98x160 3-φ7 30
    CJT1-100 195x204x135 110x180 3-φ9 75
    CJT1-150 222x232x154 130x205 3-φ11 75

    Keywords: motor contactor , electrical contactor

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