A DC contactor with dual micro switches, characterized in that, comprising: a coli, a push rod and two micro switches, the two micro switches are respectively installed at two predetermined positions in the contactor, the push rod is provided with two toggle arms respectively matched with the two micro switches, when main contacts of the contactor are in contact, the two micro switches turn on or off or convert contact by the toggle arms of the push rod according to a predetermined means.

A DC contactor with dual micro switches, characterized in that, comprising: a coli, a push rod and two micro switches, the two micro switches are respectively installed at two predetermined positions in the contactor, the push rod is provided with two toggle arms respectively matched with the two micro switches, when main contacts of the contactor are in contact, the two micro switches turn on or off or convert contact by the toggle arms of the push rod according to a predetermined means.

A relay includes a first terminal, a second terminal, a third terminal, a fourth terminal, separable contacts electrically connected between the first and second terminals, an actuator coil comprising a first winding and a second winding, the first winding electrically connected between the third and fourth terminals, the second winding electrically connected between the third and fourth terminals, a processor, an output, a first voltage sensing circuit cooperating with the processor to determine a first voltage between the first and second terminals, and a second voltage sensing circuit cooperating with the processor to determine a second voltage between the third and fourth terminals. The processor determines that the separable contacts are closed when the first voltage does not exceed a first predetermined value and the second voltage exceeds a second predetermined value and responsively outputs a corresponding status to the output.