We use these contactors majorly in the control of 3-phase motors. We can also use them when handling power circuits having DC supply of between 220-240v.

Applications
One of the major applications of the 12v DC Contactors is in electric circuits where it is used for isolation. Additionally, we can use the contactors in switching capacitors.
We can regulate the contactor using PLC outputs. This is made possible by a low consumption DC coil inside the contactor.
They can withstand a wear resistance of up to 10,000,000 cycles at an ambient temperature of about -10°C to 65°C.