Three-Phase Motor Star-Delta Starter
This device reduces the starting current of induction motors by initially connecting the motor windings in a star configuration. Once the motor reaches a certain speed, the starter switches the windings to a delta configuration, allowing the motor to operate at full voltage and power.





Technical Specifications
Product Overview
Star-Delta Starter 3SQ8-25
This three-phase induction motor starter is designed to minimize inrush current and reduce mechanical stress during the startup phase. By utilizing a controlled transition from a star to a delta configuration, it prevents voltage dips in the electrical grid while protecting the motor and connected equipment. It is an ideal solution for applications where high starting torque is not required, such as industrial pumps, fans, and compressors.
Technical Specifications
- Model Number
- 3SQ8-25
- Rated Voltage
- 230 V
- Frequency
- 50/60Hz
- Timer Adjustment Range
- 0.1-30s
Key Features
Recommended Applications
- Centrifugal Pumps
- Industrial Fans
- Compressors
- Main Advantages
- Reduced Inrush CurrentVoltage Dip PreventionMechanical Stress ReductionSmooth Transition
Components
Included Components
| Component Type | Reference Model |
|---|---|
| Timer Relay | 3SC8-A2 T2 |
| Primary Contactor | 3SC8 18 01 |
| Secondary Contactor | 3SC8-A1 11 |



