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Motor Soft Starter Built-in Bypass


Product Details:
Brand Name: SAFESAVE
Model Number: SJR3-3000 Series
Rated power: 30kW-355kW
Type: Three phase 660V
Inbuilt bypass: Yes
Frequency: 50/60hz
Communication port: RS485
Warranty: 18 months

Product Details

Technical Parameter


Video of SJR3-3000 series ac motor soft starter

Product Overview:

The 3 phase 660V SJR3-3000 series online micro-power consumption motor soft starter of Zhejiang Saikong. It expands new functions such as literal display, industrial communication and various protections based on the products of SJR2 series motor soft starter. The company has made further technical improvement in both the software and the structure of the soft starter according to the market demand. With inbuilt bypass contactor the soft starter provides complete motor protection functions including start control, running and overloading, phase failure, three-phase unbalance, over-voltage, under-voltage protection and so on with no need to further install bypass contactor and thermal relay, therefore, as another great achievement in the intelligentization of motor protection and networked technology application, it simplifies the circuit, reduces the volume, cuts the cost, makes installation and using more convenient.

ac motor starter

Rated power of SJR3-3000 series soft starter

SJR3-3000 soft starter

ac motor softstart

Dimensions of SJR3 series soft starter:



Application of SJR3 series soft starter:




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Electrical parameters of SJR3 series softstarter

Three-phase power supplyVoltage(AC) 380V±15%(220V and 660V optional)
Frequency 50Hz/60Hz
Applicable motorSquirrel cage three-phase asynchronous motor
Starting frequency When the motor is fully loaded, it shall not start more than 4 times per hour;
Less than 10 times per hour with no or little load
Protective classIP20
Anti shock Accorded with IEC68-2-27:15g, 11ms
Seismic capacityVibration intensity is 0.5G or less at an altitude less than 3000 meters
Ambient temperatureThe capacity needn't be reduced when the working temperature is between 0℃ and
40℃(At the temperature between 40℃ and 60℃, the current should be decreased 2% whenever the temperature is 1℃ higher.)
Storage temperature-25℃~70℃
Ambient moisture93% no condensation or drip, in line with IEC68-2-3
Maximum working The capacity will not be reduced when the working height is less than 1000 meters( If
is higher than 1000 meters, the current will be decreased 5% whenever it is 100 meters higher.)
Cooling means Natural cold wind
Installation angle Vertical installation and the angle of tilt should be in the range of ±10°

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