The OKYSTAR OKY3504-2 is an electronic component developed by OKYSTAR, a German electronics engineering company. It is a three-phase soft starter for motors with a rated current of up to 24 A and is used to reduce the inrush current of electric motors. It has a number of features, such as automatic setting of lower limit voltage, voltage setting dials and current limit relay output. It also has an integrated monitoring system that allows it to detect faults, alert the user, and shut down the system if necessary. In addition, this component is certified by various international organizations, such as IEC/EN, VDE/DIN, and UL.