ZB4BK1263 is a red illuminated black selector switch made by Schneider Electric. The switch hasmomentary (pulse) action and is for use in 16 A - 250 V AC applications. It has one normally open contact and one normally closed contact, both being Normally Closed when the switch is in its central or rest position. The switch has two M20 x 1.5 threaded entries for wires to be connected to the rear. The switch is panel mountable and comes with an operating head designed for manual switching applications.