Correct option is D
· A magnetic starter is an electrically operated switch that is used to start and stop electric motors. It includes components like contactors and overload protection devices.
· The term "poles" in the context of a magnetic starter refers to the number of power load contacts or switching elements that it uses to control the current to the motor.
· For example, a three-pole magnetic starter would have three power load contacts, one for each phase in a three-phase motor circuit.
· The number of magnetic starter poles refers to the number of power load contacts.
