Feature:1. Motor Start Module is with the ability to supports soft start of water pump, fan, vehicle and ordinary single-phase motor.2. Soft start controller enables to replace adjustable auto-transformer, inverter soft start, etc.3. Wiring is super simple, no need to connect bypass contactor, economical and practical, powerful.4. Depends on motor start module's simple installation, it is not require particularly complicated operations.5. Entitled with practical adoptability, motor start board's high quality can keep its high performance for a long time.Specification:Item Type: Motor start boardType: Module / Module + Radiator (optional)Model: SSR-20WA-R1 (1KW) (with soft start without soft stop)Voltage Compatibility: Single-phase 220VAC, 2-phase 380VAC, frequency: 50-60HzSoft Start Time : Adjustable from 0-30 seconds (the soft start time refers to the whole process of 0-220V, 0-380V)Starting VoltageAdjustable from 0-50% to the rated voltage (220-380V)Two Ways to Use:1. When the switch is closed, the main power supply is energized and the soft start begins.2. Use the switch to control, start by closing the soft start, open the stopWhen the starting potentiometer is adjusted to half, the starting is 200V,The maximum time of the soft start potentiometer is 30 seconds, which corresponds to the full range of 380V.For Example: When Completely Adjusted to Minimum: Initial voltage 0V soft start 0 seconds (0 seconds is not recommended)Power Supply 220V: When completely adjusted to half, the initial 55V, soft start time is about 22 secondsPower Supply 380V: When completely adjusted to half, the initial 95V, soft start time is about 22 secondsPower Supply 220V: When completely adjusted to the maximum, the initial voltage of 110V to 220V takes 15 secondsPower Supply 380V: When completely adjusted to the maximum, the initial voltage 190V to 380V takes 15 secondsSize1 : Approx. 92mm / 3.6inApprox. 74mm / 2.9inApprox. 47mm / 1.9inApprox. 104mm / 4.1inApprox. 35mm / 1.4inApprox. 43mm / 1.7inSize 2: Approx. 125mm / 4.9inApprox. 80mm / 3.1inApprox. 110mm / 4.3inApprox. 28mm / 1.1inApprox. 100mm / 3.9in.Package List:1 x Module