CT High Starting Torque Soft Starter, AC380/690/1140V

CMC-MX Soft Starter with internal Bypass Contactor, 380V

CMV series MV solid-state Soft Starter, 3/6/10kV

XFC500 3 phase vfd drive for pumps, 380~480V

GCS low-voltage Switchgear, Drawer type

XPQ Static Var Generator, 400V/690V

XPQ series Active Power Harmonic Filter, 400/690V

CFV9000A Medium-voltage Variable Speed Drive, 6/10kV

MaxWell Medium-voltage Variable Frequency Drive, 3.3~10kV

XFC550 vfd for motor control, 3 phase 380V

0102030405

China CMC-LX 3 Phase Soft Starter 7.5~630kW AC380V - Reliable Suppliers and Factory Solutions

The CMC-LX Series Motor Soft Starter is an innovative solution for starting and protecting motors, integrating advanced power electronics technology, microprocessors, and automated control systems. Designed for smooth and step-free operation, this soft starter prevents the mechanical and electrical shocks typically associated with traditional starting methods such as direct starting, star-delta starting, and auto-buckling. By effectively reducing starting currents and minimizing the need for increased distribution capacity, it helps avoid costly capacity expansion investments, Manufactured in China, our CMC-LX Series soft starter features an internal current transformer, eliminating the need for external connections and simplifying the installation process. It is suitable for squirrel cage AC asynchronous (induction) motors across a power range of 7.5 to 630 kW. As a trusted supplier in the industry, our factory ensures high-quality production standards and reliable performance for your motor starting needs

Product Detail

Features

✔ Unique SCR triggering close-loop control algorithm

The unique SCR close-loop control is specially designed for standard load and heavy load. User can choose current-limit start or voltage ramp start according to load conditions so as to realize absolutely smooth start without torque oscillation.

✔ High control precision

Adoption of high-performance Cortex-M3 32-bit inner core CPU for central control with features of fast speed, high precision and strong capability of anti-interference.

✔ Simple and compact appearance

Three-in and six-out structure of main circuit under patent protection and built-in current transformer with easy wiring and high reliability.

✔ Standard MODBUS-RTU protocol

When ordering, users can choose whether to carry the standard MODBUS-RTU communication protocol according to the actual situation.

✔ Integrated with advanced protective function

Protective functions of phase failure, overload, overcurrent, phase current unbalance, thyristor overheat to protect motor and other equipment.

✔ Fireproof material

The product of below 90kW is in plastic structure made with inflaming retarding ABS material; for the product of 90kW and above, the upper cover is in plastic structure and main frame is made of aluminium-zinc plate with features of heatproof and corrosion resistance.

✔ Movable panel

The panel can be moved to equipment operating surface through machine interface for remote control.

✔ Easy maintenance

The monitor signal coding system consists of 4-digit display monitors working state of the equipment for 24 hours and provides fast fault diagnosis.

Basic Parameters

Control power	External	AC110V-10% to AC220V+15%, 50/60Hz
	Built-in	Internal integrated control power supply, no need for external
Three-phase power	AC380V±15% (Standard or Internal delta wiring)
Nominal current	18A~1200A, 23 rated values in total
Applicable motor	Squirrel cage AC asynchronous motor
Start ramp mode	Voltage ramp start, current ramp start
Stop mode	Free stop, Soft stop
Logical input	Impedance 1.8 KΩ, power supply +24V
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 loss, overcurrent, SCR protection, overheating, phase current imbalance
IP	IP00
Cooling type	Natural cooling or forced air cooling
Installation type	Wall mounted
Communication method	RS485（Optional）
Environmental condition	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. Indoor installation, good ventilation, vibration less than 0.5G

Model Specifications

Model Specifications Overview

Model No.	Rated Current (A)	Applicable motor power (kW)	Size & Net weight
CMC-008/3-LX	18	7.5	320172172mm, 4.3kg
CMC-011/3-LX	24	11
CMC-015/3-LX	30	15
CMC-018/3-LX	39	18.5
CMC-022/3-LX	45	22
CMC-030/3-LX	60	30
CMC-037/3-LX	76	37
CMC-045/3-LX	90	45
CMC-055/3-LX	110	55
CMC-075/3-LX	150	75
CMC-090/3-LX	180	90	474285235mm, 18.5kg
CMC-110/3-LX	218	110
CMC-132/3-LX	260	132
CMC-160/3-LX	320	160
CMC-185/3-LX	370	185
CMC-220/3-LX	440	220	512320235mm, 23kg
CMC-250/3-LX	500	250
CMC-280/3-LX	560	280
CMC-315/3-LX	630	315
CMC-400/3-LX	780	400	652400235, 40.8kg
CMC-470/3-LX	920	470
CMC-530/3-LX	1000	530
CMC-630/3-LX	1200	630

Dimensions

Model	Structure No.	G	H	I	K	L	M	A	B	C	D	Gross weight (kg)
CMC-008~075/3-LX	F005	172	320	172	156	240	6	54	35	72	55	4.7
CMC-090~185/3-LX	F006	285	474	235	230	390	9	85	61	101	39	19.9
CMC-220~315/3-LX	F007	320	512	235	270	415	9	97.5	60	101	39	25.8
CMC-400~530/3-LX	F008	400	652	235	330	500	9	120	57	101	39	51.5

F005 Structure Dimension

F006 & F007 & F008 Structure Dimensions

Applications

1 Pumps and Fans

2 Conveyors and Belt Systems

3 Compressors

4 Centrifuges

5 Crushers and Mills

6 Mixers and Agitators

7 HVAC Systems

8 Conveyor Belt Systems

9 Mining Equipment

10 Water & Wastewater Treatment

Overall, low voltage soft starters are widely used in industrial processes where controlled acceleration and deceleration of electric motors are essential for efficient and reliable operation.

Frequently Asked Questions

Q1: What control modes does this soft starter support for motor starting?

It features a unique SCR triggering close-loop control algorithm designed for standard and heavy loads. Users can choose between current-limit start or voltage ramp start according to load conditions to achieve smooth starts without torque oscillation.

Q2: Does the system support external communication protocols?

Yes, users can optionally choose to carry the standard MODBUS-RTU communication protocol via RS485 interfaces depending on their actual system integration requirements.

Q3: What protective functions are built into the soft starter?

The soft starter is integrated with advanced protective functions including phase loss/failure, overload, overcurrent, phase current unbalance, SCR protection, and thyristor overheating to ensure the safety of both the motor and connected equipment.

Q4: Can the operation panel be mounted remotely?

Yes, the device features a movable panel that can be relocated to the equipment operating surface via a machine interface for convenient remote control.

Q5: What materials are used in the construction of the enclosure?

Products below 90kW feature a plastic structure made of flame-retarding ABS material. For products of 90kW and above, the upper cover is plastic while the main frame is constructed from heatproof and corrosion-resistant aluminium-zinc plates.

Q6: What environmental conditions are required for installation?

It requires indoor installation with good ventilation, ambient temperatures between -25°C and +45°C, relative humidity under 95%, and vibration less than 0.5G. It must be installed in an environment free of flammable, explosive, corrosive gas, or conductive dust. Derating is required at altitudes above 2,000 meters.