Motor starters are one of the major inventions for motor control applications. As the name suggests, a starter is an electrical device which controls the electrical power for starting a motor. These electrical devices are also used for the purpose of stopping, reversing and protecting electric motors. The following are the two major components of a starter:
1. Contactor: The main function of the contactor is to control the electric current to the motor. A contactor can make or break power to the circuit.
2. Overload
Relay: Overheating and drawing too much current can cause the motor to
burn out and become practically useless. Overload relays prevent this
from happening and protect the motor from any potential danger.
A
starter is an assembly of these two components, which allows it to turn
on or off an electric motor or motor controlled electrical equipment.
The starter also provides the necessary overload protection to the
circuit.
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