Leave Your Message

China CMC-MX Soft Starter 380V with Internal Bypass Contactor - Reliable Suppliers and Factory for 7.5-280 kW Motors

The CMC-MX series motor soft starters from our China factory are designed for the smooth soft start and stop of standard squirrel cage asynchronous motors. These advanced devices provide a gentle motor activation to prevent electrical shocks and ensure longevity of your machinery.

● The soft starters facilitate a gradual motor operation, minimizing stress on electrical components.

● Featuring a built-in bypass contactor, our soft starters save valuable installation space and streamline the setup process.

● With a wide range of current and voltage settings, along with torque control options, these devices adapt seamlessly to various load requirements.

● Equipped with multiple protection features, our soft starters ensure safety and reliability in operation.

● Additionally, they support Modbus-RTU communication for enhanced monitoring and control.

Applicable Motor: Squirrel cage AC asynchronous (induction) motors

Mains Voltage: AC 380V

Power Range: 7.5 ~ 280 kW

As leading suppliers in the industry, our commitment to quality and innovation makes the CMC-MX series the optimal choice for your motor control needs.

    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

    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

    product-description1r97
    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
    product-description2xyv
    55kW and below
    product-description3l9r
    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

    What start and stop modes does this soft starter support?

    This soft starter supports current-limited soft-start and voltage ramp start modes. For stopping, it supports both free stop and soft stop modes.

    What protection features are built into the system?

    It provides comprehensive protection functions, including phase failure, overcurrent, short circuit, SCR protection, overheating, underload, phase current imbalance, wiring faults, and internal faults to ensure operational safety.

    How does the MODBUS-RTU communication function work?

    It allows the connection of up to 32 devices during network communication. Users can configure automatic communication by setting the address (range 1-32, default 1) and the baud rate (options: 2400, 4800, 9600, or 19200, default 9600).

    Can this soft starter be installed in high-altitude environments?

    Yes, it can be installed at high altitudes, but when the sea altitude is above 2,000 meters, the soft starter must be derated for safe and proper use.

    What is the recommended maximum startup frequency?

    While the starter can accommodate both frequent and infrequent startups, it is recommended that the total number of startups does not exceed 10 times per hour.

    What are the environmental requirements for installation?

    It should be vertically wall-mounted indoors with good ventilation, ambient temperature between -25°C and +45°C, relative humidity under 95%, vibration less than 0.5G, and free of flammable, explosive, or corrosive gases and conductive dust.

    Leave Your Message