Motor Soft Starter Selection Guide (1 kW – 800 kW)
Quickly select the right soft starter for your motor with SoftStarterPro. This interactive guide helps you determine the recommended power based on your motor's voltage, load type, and power (kW or HP). Our factory offers default 380V soft starters and custom voltages (220 / 415 / 440 / 480 / 660 / 690 V) for OEM/ODM solutions. Benefit from fast pre-sales & after-sales support, technical guidance, and rapid ordering.
🔹 Quick Soft Starter Selection Calculator
Quick Soft Starter Selection Calculator
Enter your motor power and select voltage & load to get the recommended soft starter power. Result is automatically calculated.
Step 1: Confirm Motor Voltage
Select the motor's operating voltage. Default is 380 V. For custom voltages (220 / 415 / 440 / 480 / 660 / 690 V), please select from the dropdown. Custom orders are available for OEM/ODM solutions.
Step 2: Load Classification & Selection Principle
| Load Type | Typical Equipment | Selection Factor (Power Coefficient) |
|---|---|---|
| Pump | Centrifugal pump, screw pump, water pump | 1.2 |
| Fan | Ventilation fan, axial fan | 1.2 |
| Light Conveyor | Small belt or screw conveyor | 1.3 |
| Crusher | Crusher, extruder | 1.6 |
| Mixer | Industrial mixer | 1.6 |
| Compressor | Compressor | 1.5 |
| Winder / Hoist | Winder, elevator, hoist | 1.5 – 1.7 |
| Unknown | Other / Not sure | 1.6 (Heavy load default) |
Step 3: Recommended Soft Starter
Our factory default recommendation is Online Soft Starter for cost-effective, stable performance. For custom requirements, Built-in Soft Starter or By-pass Soft Starter options are available on request.
Step 4: Voltage & Power Reference
| Voltage Type | Power Range | Note |
|---|---|---|
| Three-phase 380V | 0.4 – 500 kW | Default industrial standard, suitable for most loads |
| Custom Voltage: 220 / 415 / 440 / 480 / 660 / 690 V | 0.4 – 500 kW | Contact us for OEM/ODM solutions or special order |
Step 5: Common Troubleshooting
- Soft starter does not start → Check motor connection, input voltage, and load selection.
- Overheating → Ensure soft starter rated power ≥ motor power × selection factor; check ventilation.
- Vibration or noise → Verify motor-load coupling; avoid overload.
- Fault codes → Refer to manual or contact our technical team.
Step 6: Call to Action
Ready to select your soft starter? Our technical team provides:
- Fast quotes & factory-direct pricing
- OEM/ODM custom solutions
- Technical support for installation & operation
- Rapid ordering & online guidance
📞 WhatsApp: +86 18006697926
✉ Email: ann@ann@softstarterpro.com
