A CONTACTOR WITH SEVERAL REGIONS OF CONNECTION having a plurality of command terminals and auxiliary terminals (31, 32) wherein, the contactor provides a visual distinction between the command terminals and the auxiliary terminals (31, 32), the said contactor comprising: a first region, wherein the first region includes a base that is adapted for fixing the contactor to a panel, and a housing that accessibly encloses an electromagnet, the electromagnet comprising a fixed armature and a coil; a second region, wherein the second region occupies an area located directly above the first region and is releasably attached to a top of the first region, the second region further comprising a plurality of power terminals, each power terminal adapted to receive a power conductor, and a plurality of moveable power contacts, each moveable power contact being associated with one of the power terminals and adapted to controllably close a circuit associated with the power terminal; and a third region, wherein the third region occupies an area located directly above the second region and comprises the command terminals and the auxiliary terminals (31, 32), the command terminals being electrically connected to the coil, wherein the command terminals are located at a first height above a bottom of the third region, and the auxiliary terminals (31, 32) are located at a second height above the bottom of the third region, the first and second heights (X1, X2) being different from each other, and wherein the command terminals and the auxiliary terminals (31, 32) are disposed across the third region asymmetrically, the command terminals and the auxiliary terminals (31, 32) thereby presenting an asymmetry that groups the auxiliary terminals (31, 32) together and leaves the command terminals standing away from the auxiliary terminals (31, 32) when viewed from the top of the third region, so that the command terminals are visually distinguishable from the auxiliary terminals (31, 32) when viewed from the top of the third region, wherein the asymmetry between the auxiliary terminals and the command terminals is visible when viewed from the top of the third region, the difference between the first and the second heights (X1, X2) of the command terminals and the auxiliary terminals, respectively, being visible when viewed from the front, the contactor further comprising a fourth region, wherein the fourth region occupies an area located directly above the third region, the fourth region being adapted for connection of accessories. a first region, wherein the first region includes a base that is adapted for fixing the contactor to a panel, and a housing that accessibly encloses an electromagnet, the electromagnet comprising a fixed armature and a coil; a second region, wherein the second region occupies an area located directly above the first region and is releasably attached to a top of the first region, the second region further comprising a plurality of power terminals, each power terminal adapted to receive a power conductor, and a plurality of moveable power contacts, each moveable power contact being associated with one of the power terminals and adapted to controllably close a circuit associated with the power terminal; and a third region, wherein the third region occupies an area located directly above the second region and comprises the command terminals and the auxiliary terminals (31, 32), the command terminals being electrically connected to the coil, wherein the command terminals are located at a first height above a bottom of the third region, and the auxiliary terminals (31, 32) are located at a second height above the bottom of the third region, the first and second heights (X1, X2) being different from each other, and wherein the command terminals and the auxiliary terminals (31, 32) are disposed across the third region asymmetrically, the command terminals and the auxiliary terminals (31, 32) thereby presenting an asymmetry that groups the auxiliary terminals (31, 32) together and leaves the command terminals standing away from the auxiliary terminals (31, 32) when viewed from the top of the third region, so that the command terminals are visually distinguishable from the auxiliary terminals (31, 32) when viewed from the top of the third region, wherein the asymmetry between the auxiliary terminals and the command terminals is visible when viewed from the top of the third region, the difference between the first and the second heights (X1, X2) of the command terminals and the auxiliary terminals, respectively, being visible when viewed from the front, the contactor further comprising a fourth region, wherein the fourth region occupies an area located directly above the third region, the fourth region being adapted for connection of accessories.