Push buttons and selector switches are used in conjunction with contactors or magnetic starters for remote control of motors. They provide circuit control and/or selection. Pilot lights provide visual assurance that an electrical function is being performed at a remote or local location. Confine arcing of device within the enclosure, preventing ignition of ignitable atmospheres during control operation of motors and other equipment. Used in classified areas where flammable vapors, gasses or highly combustible dusts are present. For installation in: chemical plants, petrochemical plants, refineries, other process industries, where corrosive elements are present