Square D 8736SC07S is a NEMA size 1 reversing magnetic motor starter used in control panels to start, stop, and reverse three-phase electric motors. This starter includes electromechanical contactor contacts and an overload relay that protects motors from excessive current. When the control coil is energized, the starter closes its main contacts to supply power to the motor; when the coil is de-energized or an overload condition occurs, the contacts open to stop the motor. The reversing capability means it has two contactor assemblies that can switch the motor’s rotation direction. This starter is commonly used in industrial machinery, conveyors, pumps, and other applications that require reliable motor control and protection.