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CMC-HX Low Voltage Soft Starter

CMC-HX soft starter is a new type of intelligent asynchronous motor starting and protection device.    
  Motor terminal control device that integrates starting, display, protection and data acquisition;    
✔  LCD (liquid crystal display);    
✔  Internal integrated current transformer.
  • CMC-HX_Smart Type

  • 380V / 690V / 1140V

  • Ordinary squirrel cage AC asynchronous motor

  • 7.5-630KW / 15-700KW / 22-995KW

  • General-purpose loads, such as pumps, fans, compressors, etc

Features of CMC-HX Motor soft starter

  • SCR trigger closed-loop control algorithm

SCR closed-loop control function, designed for standard and heavy loads. The user can select current-limiting start and voltage ramp start according to the load condition to achieve smooth torque-free oscillating start effect.

  • Advanced Unique load application parameters

There are ten built-in load types in parameters for users to choose, and a starting control curve is provided for each type of load, so that the soft start can be matched with the load to achieve a good start and stop effect.

  • Multiple starting and stopping methods 

Voltage exponential curve, voltage linear curve, current exponential curve, current linear curve, and programmable kick starting torque and starting current limit can be applied in each mode. According to different loads, the corresponding starting curve can be selected to achieve a good starting effect. A variety of stopping methods, programmable soft stopping, free stopping, braking, pump stop. The basic algorithm makes the motor start and stop more accurate and smooth. 

  • Advanced Communication function

Modbus RTU communication is standard. Optional Ethernet/GPRS communication module is convenient for users to connect and control the network, and improve the automation level and reliability of the system.

  • Analog signal control 

The user can input 4-20mA or 0-20mA standard signal, and can set the upper and lower limit of the analog quantity to realize the start and stop control and alarm of the motor. Data (pressure, temperature, flow, etc.) can also be transmitted via the soft starter. With 4-20mA or 0-20mA standard analog signal output function. 

  • Fireproof material

Below 90KW is a full plastic shell structure, which is made of flame-retardant ABS material. The upper cover of the power section of 90KW and above is a plastic shell structure, and the main frame is made of aluminum-zinc plate material, which has heat resistance and corrosion resistance.

  • Movable panel

The panel can be moved to equipment operating surface through machine interface for remote control,which is convenient for on-site use.

  • Powerful anti-interference property

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

  • Double parameter function 

It has two sets of basic parameters, which can control two motors with different powers respectively. 

  • Self-adaption of power frequency 

Adaptive power frequency 50/60Hz adaptive function, user-friendly.

  • Dynamic fault memory

10 faults can be recorded. It is easy to find the cause of the failure.

  • Perfect protection function

The whole process detects current and load parameters, and has microcomputer protection functions such as overcurrent, overload, underload, overheating, phase failure, short circuit, three-phase current imbalance, phase sequence detection, and frequency error.

  • Friendly man-machine interface

It adopts LCD display panel, with two display interfaces in Chinese and English, which makes programming and parameter adjustment more convenient.

Technical Parameters of CMC-HX Motor Starter

Control power

AC110V--AC220V±15%, 50/60Hz

Three-phase power

AC380V±15% Standard wiring AC380V, 660V, 1140V±15%

Internal delta connection AC380V±15%

Nominal current

18A--1000A, 22 rated values in total

Applicable motor

Ordinary squirrel cage AC asynchronous motor

Start mode

Voltage exponential curve, voltage linear curve, current exponential curve, current linear curve

Stop mode

Free stop, soft stop, brake, and pump stop

Logical input

Impedance 1.8 KΩ, power supply +24V

Start frequency

Frequent or infrequent start available, start is advised not to exceed 10 times each other

Protective function

Overcurrent, overload, underload, overheat, phase failure, three-phase current imbalance, phase sequence detection, overheat of motor and frequency error, etc.

Protection level

IP00, IP20

Cooling type

Natural cooling or forced air cooling

Installation type

Wall mounted



When sea altitude is above 2,000m, soft starter should be derated for use.

Ambient temperature: -25-+45°C

Relative humidity: less than 95%(20°C±5°C)  

Free of flammable, explosive and corrosive gas or conductive dust. Good ventilation for indoor installation and vibration is less than 0.5G

Model Selection of CMC-HX 3 phase Motor Soft Starter

3 phase motor soft starter for sale-XiChiElectric

Item Rated Current


380V 690V 1140V

Adapted Power





Adapted Power





Adapted Power






18 7.5 F005 15 F005
2 24 11 22 33
3 30 15 30 45
4 39 18.5 37 55
5 45 22 45 65
6 60 30 55 90
7 76 37 75 110
8 90 45 90 135
9 110 55 110 165
10 150 75 132 F006
11 180 90 F006 160 280 F006
12 218 110 200 344
13 260 132 250 400
14 320 160 300 505 F007
15 370 185 350 584
16 440 220 F007 400 F007
17 500 250 456 789
18 560 280 500 884 F008
19 630 315 560 F008
20 780 400 F008

21 920 470
22 1000 530
23 1200 630

Dimensions of CMC-HX Soft Starter (unit: mm, 380V)

Soft Start AC Motor-XiCHiElectric Soft Start AC Motor-XiCHiElectric Soft Start AC Motor-XiCHiElectric Soft Start AC Motor-XiCHiElectric
75kW and below 90kW - 185kW 220kW - 315kW 400kW - 630kW









320 172
156 240 6 20 10 100 4.5
CMC-030~045/3-HX 4.7
CMC-055~075/3-HX 5.1


285 474 235
230 390 9 20.6
CMC-220~315/3-HX F007 320 512 270
415 25.6
CMC-400~630/3-HX F008 400 647 330

How to order motor soft starter

  • When placing an order, please inform the supplier of the product model, specifications, load conditions and conditions of use in order to select the product correctly.

  • The standard configuration of the soft starter includes a current transformer, and users do not need to connect an external current transformer.

  • For users who have special requirements for this product, please explain to the supplier when ordering, and we will provide perfect services

motor soft starter manufacturer-XICHIELECTRIC


Application Cases

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 +86-29-88626546
 knight.liu@xichi.com
 Headquarters Address: Block B, Xi'an National Digital Publishing Base, No.996, Tianguqi Rd, High-tech Zone, Xi'an, Shaanxi, China
 Production Base: No.2, West Qinlingsi Rd, Caotang Technology Industrial Base, High-tech Zone, Xi'an, Shaanxi, China
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