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    25 hp (18 kW) Soft starter, 37 A, 3ph 220v/400v/460v

    5 out of 5 based on 2 reviews | Write a review
    25 hp soft starter, 18 kW (18.5 kW) three phase 220v, 400v, 460v AC motor soft starter direct sale by manufacturer, control motor in soft start & soft stop.
    SKU: GS-018
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    25 hp AC motor soft starter, 18 kW three phase 220v, 400v, 460v, 690v motor soft starter.

    Model GS2-018 (220v, 240v), GS3-018 (380v, 400v, 415v), GS4-018 (460v, 480v), GS6-018 (575v, 690v).
    Capacity 25 hp (18 kw)
    Current 37 amps at 380v/480v, 75 amps at 220v, 26 amps at 690v
    Weight 5 kgs
    Dimension 270*146*160 mm
    Input Voltage Three-phase 230v, 415v, 480v, 660v AC
    Frequency 50Hz/ 60Hz
    Adaptive Motor Squirrel-cage three-phase asynchronous motor
    Starting Times It is recommended not to exceed 20 times per hour.
    485 Communication DB9 interface, male plug, ① is RS485+, ⑥ is RS485-
    Control Mode
    1. Operation panel control.
    2. Operation panel + external control.
    3. External control.
    4. External control + COM control.
    5. Operation panel + external + COM control.
    6. Operation panel + COM control.
    7. COM control.
    8. No start or stop operation.
    Start Mode
    1. Current-limiting to start.
    2. Voltage ramp to start.
    3. Torque control + current-limiting to start.
    4. Torque control + voltage ramp to start.
    5. Current ramp to start.
    6. Voltage current-limiting double closed-loop start.
    Stop Mode
    1. Soft stop.
    2. Free stop.
    Protective Function
    1. Open loop protection for external instantaneous stop terminals.
    2. Over-heat protection for soft starter.
    3. Protection for too long starting time.
    4. Input open phase protection.
    5. Output open phase protection.
    6. Unbalanced three-phase protection.
    7. Starting over current protection.
    8. Running overload protection.
    9. Under voltage protection for power voltage.
    10. Overvoltage protection for power voltage.
    11. Protection for fault parameter setting of the soft starter.
    12. Load short circuit protection.
    13. Auto restart or incorrect wiring protection.
    14. Incorrect wiring protection of external control stop terminals.
    Ambient Place to be used Indoor location with good ventilation free from corrosive gas and conductive dust.
    Altitude Below 1000M. It has to increase the soft starter rate power when the altitude is more than 1000M.
    Temperature -30 +55 oC
    Humidity 90%RH without dew condensation.
    Vibration <0.5G
    Structure Enclosure IP 20
    Cooling Natural wind cooling.



    18KW Soft Starters Details

    Tips: Soft starter application fields
    The soft starter can effectively limit the starting current of AC asynchronous motor, and can be widely used in fans, water pumps, transportation, compressor and other loads. It is the ideal replacement product of traditional star-delta conversion, self-couple decrease-voltage, and magnetic-control decrease-voltage equipment. AC motor soft starter has a very good energy saving effect. It uses a thyristor to reduce voltage, the power factor is low when the soft start load is light, and the soft starter can improve the power factor by reducing the control voltage, in order to achieve light load energy saving effect. The fans, pumps and other load starting torque is low, the torque will increase with the speed. When using the soft start mode can reduce the inrush starting current well, and in the shutdown we can use soft-stop to avoid water hammer effect. When you need to reduce the exciting current, you can change the effective value of the output voltage, so to achieve the purpose of adjusting the speed, while improving the system power factor, achieving optimizing the energy saving effect.

    Soft Starter Works with a Bypass Contactor

    Soft starter works with a bypass contactor saving energy by eliminating thyristor losses during the run. The bypass contactor shunts the current flowing through the soft starter switch circuit to reduce heat accumulation in the soft starter power electronics during motor operation. This provides maximum efficiency and prolongs the life of soft-start switching components because they only work during the start and stop cycles of the motor.

    How to Change the Soft Starter Rated Current

    Existing reviews of 25 hp (18 kW) Soft starter, 37 A, 3ph 220v/400v/460v
    Questions about soft starters
    In all of your wiring diagrams and pictures, I see only one reference to the 3φ common or neutral. The neutral connects from the input circuit breaker to A2 on the contactor. I see no neutral connection to the soft starter or even the motor in your wiring diagram or pictures. This is not right. It is also not right for not showing the relationship of 3φ neutral to ground.

    I have not powered on your device at all because the information supplied is uncomplete. I need to see how your soft starter is connected to neutral and a neutral connection to the 3φ motor. Please show this essential information plainly in wiring diagram and pictures. Your pictures are not adequate. There are only 2 color wires Red and blue. The white labels are mostly unreadable. No ground wire shown. No neutral or ground to the motor or soft starter. This is not right. Please show all of this information clearly.

    Otherwise, please give me an RMA number and address to return this device.If the only connection from the 3φ neutral is to the contactor at A2 and the rest of the circuit “floats”, then state this plainly. Is there a connection from 3φ neutral to the soft starter and motor? If so – show it?
    From: Nick | Date: 03/03/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    1. Yes, you are right. The only connection from the 3φ neutral is to the contactor at A2 and the rest of the circuit “floats”. Our soft starter accepts power from only 3φ, no natural wire, no ground wire. The neutral wire used in the video is provided for the contactor.
    2. The neutral you see in the demo video is just the coil connected to the contactor (this is because the contactor coil voltage is AC220V, for three-phase 380V voltage, the voltage of one live wire and one natural wire is exactly AC220V) . The ground wire of the motor you can connect to the ground wire of the power supply.
    25hp soft starter has a certain range of tolerances
    I want to order your 25hp soft starter, but the lowest voltage shown at your website input voltage option is 220 volts. The power here measures 208 volts across the legs?
    From: Holly | Date: 01/03/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Ok, select 220V input and proceed ordering, we shall modify your order to 208V based on sending us an email. And in all cases no worries the soft starter has +/- 15% tolerance, so also 220V will work good.
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