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China CMC-MX Soft Starter with Internal Bypass Contactor, 380V, Power Range 7.5-280kW - Reliable Suppliers & Factory

The CMC-MX series motor soft starters are specifically designed for the smooth starting and stopping of standard squirrel cage asynchronous motors. As a leading solution from China’s top manufacturers, these products offer numerous benefits for industrial applications, ● Experience gentle motor start and stop functionality, effectively minimizing electrical shock during operation, ensuring safety and reliability, ● Integrated with a built-in bypass contactor, these soft starters save valuable installation space and simplify setup for users, ● They feature a wide range of current and voltage settings, along with torque control capabilities, making them adaptable to various load requirements, ● Equipped with multiple protective features, they ensure dependable performance in diverse environments, ● Support for Modbus-RTU communication enhances integration with existing systems for increased efficiency, Applicable to squirrel cage AC asynchronous (induction) motors, these soft starters operate at a mains voltage of AC 380V, with a power range of 7.5 to 280 kW. As a trusted product from China’s suppliers and factories, the CMC-MX series is an ideal choice for optimizing motor control and enhancing operational efficiency

    Features

    Various starting methods

    Users can select current limit start, voltage ramp start, and can apply programmable kick start and start current limit in each mode. Meet the needs of the site and achieve a good starting effect.

    High reliability

    The high-performance microprocessor digitizes the signals in the control system, avoiding the excessive adjustment of the analog circuits in the past, thereby obtaining accuracy and execution speed.

    Strong anti-interference

    All external control signals are optically isolated, and different anti-noise levels are set to adapt to use in special industrial environments.

    Simple adjustment method

    The control system has a wide range of applications, the mode adjustment is simple and intuitive, and various functional options can be used to match various control objects.

    Optimized structure

    The unique compact internal structure design is particularly convenient for users to integrate into the existing system, saving the cost of current transformers and bypass contactors for users.

    Power frequency can be set

    The power frequency 50/60Hz is set by parameters, which is convenient for users to use.

    Analog output

    4-20mA current output function, user-friendly.

    MODBUS-RTU communication

    During network communication, 32 devices can be connected. Users can achieve the purpose of automatic communication by setting the baud rate and communication address. The communication address setting range is 1-32, and the factory default value is 1. The communication baud rate setting range is: 0, 2400; 1, 4800; 2, 9600; 3, 19200; the factory value is 2 (9600).

    Perfect protection function

    A variety of motor protection functions (such as overcurrent, input/output phase loss, thyristor short circuit, overheat protection, leakage detection, electronic thermal overload, internal contactor fault, phase current imbalance, etc.) Not damaged during operation.

    Easy maintenance

    The monitoring signal coding system composed of 4-digit digital display monitors the working conditions of the system equipment 24 hours a day, and provides fast fault diagnosis at the same time.

    Basic Parameters

    Parameter Specification
    Applicable motor type Ordinary squirrel cage AC asynchronous motor
    Rated control supply voltage AC110V to AC220V+15%
    Supply frequency 50/60Hz
    Rated operation voltage Standard wiring AC380V
    Internal delta wiring AC380V±30%
    Nominal current 18A~560A, 18 rated values in total
    Applicable motor Ordinary squirrel cage AC asynchronous motor
    Start mode Current-limited soft-start, Voltage ramp start.
    Stop mode Free stop, Soft stop
    Logical input Impedance 1.8 KΩ, power supply +15V
    Start frequency Frequent or infrequent startup can be done, it is recommended that the number of startups per hour does not exceed 10 times
    Protective function Phase failure, overcurrent, short circuit, SCR protection, overheating, underload, phase current imbalance, wiring, internal fault, etc.
    IP degree of protection IP00
    Cooling system Natural cooling or forced air cooling
    Installation type Wall mounted-vertical installation
    Installation Environment When sea altitude is above 2,000m, soft starter should be derated for use.
    Ambient temperature: -25°C to +45°C
    Relative humidity: less than 95% (20°C±5°C)
    Free of flammable, explosive and corrosive gas or conductive dust.
    Indoor installation, good ventilation, vibration less than 0.5G

    Model Specifications

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    Model No. Rated Current (A) Applicable motor power (kW) Size & Net weight
    CMC-008/3-MX 18 7.5 173*275*192mm,
    5.6kg
    CMC-011/3-MX 24 11
    CMC-015/3-MX 30 15
    CMC-018/3-MX 39 18.5
    CMC-022/3-MX 45 22
    CMC-030/3-MX 60 30
    CMC-037/3-MX 76 37
    CMC-045/3-MX 90 45
    CMC-055/3-MX 110 55
    CMC-075/3-MX 150 75 285*450*305mm,
    25.1kg
    CMC-090/3-MX 180 90
    CMC-110/3-MX 218 110
    CMC-132/3-MX 260 132
    CMC-160/3-MX 320 160
    CMC-185/3-MX 370 185 320*523*330mm,
    34.5kg
    CMC-220/3-MX 440 220
    CMC-250/3-MX 500 250
    CMC-280/3-MX 560 280

    Dimensions

    Power range Size (mm)
    G H I K L M E D A/B/C
    8 ~ 55 kW 173 275 192 133 250 7 90 86 50
    75 ~ 160 kW 285 450 305 230 390 9 170 158 50
    185 ~ 280 kW 320 523 330 270 415 9 195 158 50
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    55kW and below
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    75kW ~ 160kW
    product-description4nh8
    185kW ~ 280kW
    product-description5b2g

    Basic Settings of Different Applications

    (following settings are for reference only)
    Load type Initial voltage (%) Start ramp time (s) Stop ramp time (s) Current limit ILIM
    Foreship propeller 25 10 0 2.5
    Centrifugal fan 25 20 0 3.5
    Centrifugal pump 25 6 6 3
    Piston compressor 25 15 0 3
    Hoisting machinery 30 15 6 3.5
    Mixer 40 15 0 3.5
    Crusher 30 15 6 3.5
    Screw compressor 20 15 0 3.5
    Spiral conveyor belt 25 10 6 3.5
    No-load motor 25 10 0 2.5
    Conveyor belt 25 15 10 3.5
    Heat pump 25 15 6 3
    Escalator 25 10 0 3
    Air pump 25 10 0 2.5

    Frequently Asked Questions (FAQ)

    What starting modes are supported by this soft starter?
    The soft starter supports various starting methods including current-limited soft-start, voltage ramp start, and users can apply programmable kick start and start current limit in each mode.
    What type of network communication does it support?
    It supports MODBUS-RTU communication. During network communication, up to 32 devices can be connected. Users can configure the baud rate (ranging from 2400, 4800, 9600, to 19200) and communication addresses (1-32).
    What motor protection functions are integrated into the system?
    It features perfect protection functions including phase failure, overcurrent, short circuit, SCR protection, overheating, underload, phase current imbalance, wiring faults, and internal faults to prevent damage during operation.
    Are there any altitude limitations for installation?
    Yes, when the installation sea altitude is above 2,000 meters, the soft starter should be derated for use.
    What is the recommended starting frequency per hour?
    Although frequent or infrequent startup can be performed, it is recommended that the number of startups does not exceed 10 times per hour.
    What are the environmental requirements for installation?
    The unit should be installed indoors with good ventilation and a vibration level less than 0.5G. The ambient temperature should range from -25°C to +45°C, with a relative humidity under 95% (at 20°C±5°C), and it must be free of flammable, explosive, corrosive gas, or conductive dust.

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