This is a Wye Delta (also called Star Delta) motor starter. It is used on a 3-phase motor with delta connection to reduce its starting (inrush) current by 70%. If you open your motor's terminal box and can see terminals marked as "U1, V1, W1, U2, V2, W2", this starter will work with it. Starting time can be easily adjusted from 1 second to 30 seconds, depending on your motor's load. Press the ON and OFF buttons to control your motor directly. Please note: the starter has a thermal relay to protect your motor from overloading. Please find the maximum current level on your motor plate and choose a thermal relay accordingly. If you do not make a choice, the starter will be shipped with a 29 to 44A thermal relay as default choice. Specifications: Working voltage: 200 to 220V 60Hz AC, 3-phase. Inrush current reduction: 70%. Minimum starting time: 1 second. Maximum starting time: 30 seconds. Maximum motor current: 44A. Maximum motor power: 15HP (11kW). Minimum motor power: 1HP. Thermal relay: 29 to 44A installed (also available: 4 to 7A, 7 to 10A, 9 to 14A, 15 to 22 A, 21 to 31A). Detailed installation instructions included. Dimensions: 10 x 8 x 12". Weight: 12 lbs