A) Main Circuit B)Control Circuit with momentary contact control (Push button) C) Control circuit for maintained contact S0 : ‘OFF’ Push button S1 : ‘ON’ Push button S : Maintained command switch K1 : Main contactor F1 : Main circuit fuse F2 : Overload relay F3 : Control circuit fuse This is by far the most common starting method available on the market. The starting equipment consists of only a main contactor and thermal or electronic overload relay. The disadvantage with this method is that it gives the highest possible starting current. A normal value is between 6 to 7 times the rated motor current but values of up to 9 or 10 times the rated current exist. Besides the starting current there also exists a current peak that can rise up to 14 times the rated current since the motor is not energised from the the first moment when starting.The values are dependent on the design and size of the motor, but in general, a smalle...