Soft Start Controller Motor Start Board 3 Phase Electrical Parts Aluminum Bottom for Conveyors / Compressors(Module Radiator ) Item Type: Motor Controller Model: TSR-40WA-R1（4KW ) (with soft start without soft stop) Suitable for Three-Phase: 380V Compatible: 50-60HZ Radiator Voltage: Default 220VAC Soft Start Time : 30 seconds adjustable (time rise refers to 0-380V). Starting Voltage: Adjustable slow start from 150-250V to rated voltage (380V) Two Ways e: 1. While switch closed, the soft start of the main power supply starts. 2. Use switch to control, start by closing the soft start, stop when disconnected. Selection: 10A below 1KW, 20A below 2KW, 40A from 3-4KW, 60A from 5-6KW, 80A from 7-8KW, 100A from 8-10KW, 150A from 11-15KW, 200A from 20KW.If the heat sink is larger, the heat sink should also be matched. Applicable Places: Widely used in fans, pumps, belt conveyors, ball mills, conveyors and compressors as an excellent replacement for traditional for star-delta conversion, auto-coupling voltage reduction, magnetron voltage reduction, frequency converter and other voltage reduction starting equipment, safe and reliable.