3phase induction motor soft starters

A soft starter is a device used in motor control applications to gradually ramp up the voltage and current supplied to an electric motor, rather than applying full power abruptly. This helps in reducing the mechanical and electrical stress on the motor and the connected machinery during startup. Soft starters are typically employed in situations where a direct-on-line (DOL) start would result in excessive mechanical shocks, electrical disturbances, or high inrush currents.

According to the voltage level of the adapted motor, XICHI soft starters are divided into low-voltage soft starters and medium-voltage soft starters.

XICHI Low-voltage series Soft Starters
Model	CMC-LX	CMC-HX			CMC-MX	XST260
Product image
Applicable motors	Squirrel cage AC asynchronous(induction) motor
Power Supply	AC380V±15%	AC380V	AC690V	AC1140V	AC380V±15%	AC220V~ 480V ±10%
Power Supply	AC380V±15%	±15%			AC380V±15%	AC220V~ 480V ±10%
Nominal current	18~1200A	18~1200A			18~560A	18~780A
Motor power	7.5 ~ 630kW	7.5~630kW	15~700kW	22~995kW	7.5 ~ 280kW	7.5~400kW
Bypass contactor	Not included	Not included			Built-in	Built-in
Phase sequence	√	√			√	√
Phase loss	√	√			√	√
Over load	/	√			√	√
Under load	/	√			√	√
Over current	√	√			√	√
Under current	/	/			/	√
Current unbalance	√	√			√	√
Over voltage	/	/			/	√
Under voltage	/	/			/	√
Overlong starting time	√	√			√	√
Electronic thermal overload	√	√			√	√
Motor overheating	/	√			√	√
Bypass open	/	/			/	√
Lock rotor	/	/			/	√