Contactor
A contactor is a device for creating and breaking an electrical power circuit. For example, we normally use a contactor for turning on & off an electrical motor. Unlike relays, contactor are prepared with qualities to control and suppress the arc made when interrupting heavy motor currents. Contactors come in many states with various capacities and characteristics. Unlike a circuit breaker, a contactor is not planned to interrupt a short circuit current. The contactor is mainly used in higher current carrying capacity applications, while the relays are used for lower current applications.
Applications
Lighting Control
Contactors use to deliver central control of large lighting installations, such as office buildings or retail buildings. Latching contactor uses to decrease power consumption in the contactor coils and have two operating coils. One coil, momentarily energized, seals the power circuit contacts, which are then mechanically held closed; the second coil opens the contacts.
Electric Motor Starter
Contactor used as magnetic starters. A magnetic starter is a device created to provide power to electric motors. It contains a contactor as an essential component, giving power-cutoff, under-voltage, and overload protection.
The use of a contactor with the circuit breaker secures the safety of load operation in industries. In such an application, it is used to switch a load fast.
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