Brand new, unused. Opened for photography. 220V star-delta switch, SD2B model, 15kW compatible. - Model: SD2B - Voltage: 220V - Power: 15kW - Type: Star-Delta Switch Features: The SD series is a manual starter, a robust drum-structured star-delta switch capable of star-delta starting. Star-delta starting is a starting method used to mitigate voltage drops in the power supply caused by the starting of an electric motor, and is widely used. In star-delta starting, the stator windings are first connected in a star configuration to start the motor. Then, after the motor's rotational speed has almost reached its rated speed, it is switched to a delta configuration to begin rated operation. This method allows the starting current to be controlled to 1/3 and the starting torque to be reduced to 1/3. During starting, it is necessary to have no load or a light load condition, but it is widely used because it is inexpensive and easy to handle. Type: Relay Compatible motor capacity (200-240V) (kW): 15 Material: Steel plate Color: Ivory Connection terminals: M6 screw (wire clamp) Rated insulation voltage (V): AC250 Thank you for viewing.