Direct motor starter LT5-D 18A 400V

A direct Motor Starter, is a type of motor starter used in industrial and commercial applications to start electric motors. It is one of the simplest methods to start and stop induction motors. The primary component of a LT5-D starter is the contactor. The contactor is an electromagnetic switch that controls the flow of current to the motor. It consists of a coil that, when energized, generates a magnetic field that pulls the contacts together, allowing current to flow through them. A thermal overload relay is a protection device integrated into the DOL starter to prevent the motor from overheating due to prolonged operation under heavy loads or stalled conditions. It contains a bimetallic strip or other temperature-sensitive element that expands when heated. One of the drawbacks of starters is the high starting current, which can lead to voltage drops in the power supply and mechanical stress on the motor and connected equipment. To overcome this, other types of motor starters like soft starters and variable frequency drives VFDs are used. Soft starters gradually ramp up the voltage and current during startup, reducing the impact on the power supply and mechanical components. VFDs provide precise control over the motor is speed and torque, leading to energy savings and smoother operations.