The SFT20 series is a versatile soft starter for motors ranging from 7.5 to 450 kW in power. It works with three-phase motors with supply voltage 3 x 380 V, has control voltage 220 V. For operation in industrial networks, the SFT20 soft starter has a built-in RS-485 interface (Modbus RTU), an additional analogue output, and a convenient operator panel with buttons.
Specifications
Input
3x400V
Output power
37kW
Rated output current
75A
Build-in options
No
Application
centrifugal and submersible pumps
screw compressors
crushers
fans
Advantages
This series provides soft start and stop of the electric motor and has advanced safety functions. The SFT20 has four programmable digital inputs, 3 relay outputs, 1 analogue input (thermistor). Basic start and stop functions are available: start with initial current/voltage, start with linear voltage increase, soft stop with voltage control, coast braking. The device has advanced functions: forced start, acceleration curves for the pump.
