Answer / sivasankari

Relays are usually used for circuitry control, where as
contactors are used for motor control.

Answer / jason noronha

Purpose of a relay is to protect a device or a circuit.
Whereas purpose of a contactor is to make and break the
circuit thereby extracting the required signals from their
auxillary contacts.

Answer / senkathir

relay can uses low power load.contractor can uses high power load

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